[LyX/master] Fix copy-paste leftover

[Georg Baum]

commit adfeb9637fec57060505f84754f5afca51fea2e1
Author: Georg Baum <b...@lyx.org>
Date:   Sat Oct 10 21:15:55 2015 +0200

    Fix copy-paste leftover
    
    Found by cppcheck: (style) Same expression on both sides of '&&'.
    I deduced the correct if-condition from the other places where 
theLaTeXFonts()
    is called.

diff --git a/src/frontends/qt4/GuiDocument.cpp 
b/src/frontends/qt4/GuiDocument.cpp
index e9d0f41..a4aa71f 100644
--- a/src/frontends/qt4/GuiDocument.cpp
+++ b/src/frontends/qt4/GuiDocument.cpp
@@ -1893,7 +1893,7 @@ bool GuiDocument::completeFontset() const
        return (fontModule->fontsSansCO->itemData(
                        fontModule->fontsSansCO->currentIndex()).toString() == 
"default"
                && fontModule->fontsSansCO->itemData(
-                       fontModule->fontsSansCO->currentIndex()).toString() == 
"default");
+                       
fontModule->fontsTypewriterCO->currentIndex()).toString() == "default");
 }