[LyX/master] Fix some nullptr warnings.

[Richard Kimberly Heck]

commit 45f0fae10c117f6b81a75009bb93c14a82b21741
Author: Richard Kimberly Heck <rikih...@lyx.org>
Date:   Sat Jul 6 15:05:16 2019 -0400

    Fix some nullptr warnings.
---
 src/output_latex.cpp |   28 ++++++++++++++--------------
 1 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/src/output_latex.cpp b/src/output_latex.cpp
index b26fb1b..a516c0d 100644
--- a/src/output_latex.cpp
+++ b/src/output_latex.cpp
@@ -64,7 +64,7 @@ enum OpenEncoding {
 struct OutputState
 {
        OutputState() : open_encoding_(none), cjk_inherited_(0),
-                       prev_env_language_(0), nest_level_(0)
+       prev_env_language_(nullptr), nest_level_(0)
        {
        }
        OpenEncoding open_encoding_;
@@ -192,7 +192,7 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & 
buf,
                pit == paragraphs.begin() ? pit : prev(pit, 1);
 
        OutputState * state = getOutputState();
-       bool const use_prev_env_language = state->prev_env_language_ != 0
+       bool const use_prev_env_language = state->prev_env_language_ != nullptr
                        && priorpit->layout().isEnvironment()
                        && (priorpit->getDepth() > pit->getDepth()
                            || (priorpit->getDepth() == pit->getDepth()
@@ -774,7 +774,7 @@ void TeXOnePar(Buffer const & buf,
        }
 
        Paragraph const * nextpar = runparams.isLastPar
-               ? 0 : &paragraphs.at(pit + 1);
+               ? nullptr : &paragraphs.at(pit + 1);
 
        bool const intitle_command = style.intitle && style.latextype == 
LATEX_COMMAND;
 
@@ -814,16 +814,16 @@ void TeXOnePar(Buffer const & buf,
        // This paragraph's language
        Language const * const par_language = par.getParLanguage(bparams);
        Language const * const nextpar_language = nextpar ?
-               nextpar->getParLanguage(bparams) : 0;
+               nextpar->getParLanguage(bparams) : nullptr;
        // The document's language
        Language const * const doc_language = bparams.language;
        // The language that was in effect when the environment this paragraph 
is
        // inside of was opened
        Language const * const outer_language =
-               (runparams.local_font != 0) ?
-                       runparams.local_font->language() : doc_language;
+               (runparams.local_font != nullptr) ?
+               runparams.local_font->language() : doc_language;
 
-       Paragraph const * priorpar = (pit == 0) ? 0 : &paragraphs.at(pit - 1);
+       Paragraph const * priorpar = (pit == 0) ? nullptr : &paragraphs.at(pit 
- 1);
 
        // The previous language that was in effect is the language of the
        // previous paragraph, unless the previous paragraph is inside an
@@ -833,7 +833,7 @@ void TeXOnePar(Buffer const & buf,
        // Note further that we take the outer language also if the prior par
        // is PassThru, since in that case it has latex_language, and all 
secondary
        // languages have been closed (#10793).
-       bool const use_prev_env_language = state->prev_env_language_ != 0
+       bool const use_prev_env_language = state->prev_env_language_ != nullptr
                        && priorpar
                        && priorpar->layout().isEnvironment()
                        && (priorpar->getDepth() > par.getDepth()
@@ -884,7 +884,7 @@ void TeXOnePar(Buffer const & buf,
        // languages (see # 10111).
        bool const in_polyglossia_rtl_env =
                use_polyglossia
-               && runparams.local_font != 0
+               && runparams.local_font != nullptr
                && outer_language->rightToLeft()
                && !par_language->rightToLeft();
        bool const localswitch = runparams_in.for_search
@@ -940,7 +940,7 @@ void TeXOnePar(Buffer const & buf,
                            && par_language->lang() != "arabic_arabtex"
                            && outer_language->lang() != "arabic_arabtex"
                            // are we in an inset?
-                           && runparams.local_font != 0
+                           && runparams.local_font != nullptr
                            // is the inset within an \L or \R?
                            //
                            // FIXME: currently, we don't check this; this 
means that
@@ -1183,7 +1183,7 @@ void TeXOnePar(Buffer const & buf,
                && (par_language->lang() != "arabic_arabtex"
                    && outer_language->lang() != "arabic_arabtex")
                // have we opened an \L or \R environment?
-               && runparams.local_font != 0
+       && runparams.local_font != nullptr
                && runparams.local_font->isRightToLeft() != 
par_language->rightToLeft()
                // are we about to close the language?
                &&((nextpar && par_lang != nextpar_lang)
@@ -1352,7 +1352,7 @@ void TeXOnePar(Buffer const & buf,
        // If this is the last paragraph of the inset and a local_font was set 
upon entering
        // and we are mixing encodings ("auto-legacy" or "auto-legacy-plain" 
and no XeTeX or LuaTeX),
        // ensure the encoding is set back to the default encoding of the local 
language.
-       if (runparams.isLastPar && runparams_in.local_font != 0
+       if (runparams.isLastPar && runparams_in.local_font != nullptr
            && runparams_in.encoding != 
runparams_in.local_font->language()->encoding()
            && (bparams.inputenc == "auto-legacy" || bparams.inputenc == 
"auto-legacy-plain")
                && !runparams.isFullUnicode()
@@ -1622,7 +1622,7 @@ void latexParagraphs(Buffer const & buf,
        }
        // Likewise for polyglossia or when using begin/end commands
        // or after an active branch inset with a language switch
-       Language const * const outer_language = (runparams.local_font != 0)
+       Language const * const outer_language = (runparams.local_font != 
nullptr)
                        ? runparams.local_font->language() : bparams.language;
        string const & prev_lang = runparams.use_polyglossia
                        ? getPolyglossiaEnvName(outer_language)
@@ -1718,7 +1718,7 @@ pair<bool, int> switchEncoding(odocstream & os, 
BufferParams const & bparams,
                                state->open_encoding_ = none;
                                count += 7;
                        }
-                       if (runparams.local_font != 0
+                       if (runparams.local_font != nullptr
                            &&  oldEnc.package() == Encoding::CJK) {
                                // within insets, \inputenc switches need
                                // to be embraced within \bgroup...\egroup;