[LyX/master] Initialize num_bib_key_

[Jean-Marc Lasgouttes]

commit c346de1bd19c8aa719588c2e3f3a2bd69cbcc75e
Author: Jean-Marc Lasgouttes <lasgout...@lyx.org>
Date:   Wed Aug 28 14:25:44 2019 +0200

    Initialize num_bib_key_
    
    Spotted by Coverity.
---
 src/BiblioInfo.h |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/BiblioInfo.h b/src/BiblioInfo.h
index c348a23..5709be4 100644
--- a/src/BiblioInfo.h
+++ b/src/BiblioInfo.h
@@ -49,10 +49,10 @@ public:
        ///
        typedef std::vector<BibTeXInfo const *> const BibTeXInfoList;
        ///
-       BibTeXInfo() : is_bibtex_(true), modifier_(0) {}
+       BibTeXInfo() : is_bibtex_(true), num_bib_key_(0), modifier_(0) {}
        /// argument sets isBibTeX_, so should be false only if it's coming
        /// from a bibliography environment
-       BibTeXInfo(bool ib) : is_bibtex_(ib), modifier_(0) {}
+       BibTeXInfo(bool ib) : is_bibtex_(ib), num_bib_key_(0), modifier_(0) {}
        /// constructor that sets the entryType
        BibTeXInfo(docstring const & key, docstring const & type);
        /// \return an author or editor list (short form by default),