qmake: Fix comment false-alarm bug in findMocs().

If a / wasn't part of a comment-start, it and the character after it
were none the less stepped over.  If the character after started an
enclosure, this would duly be missed, leading to mis-parsing of the
subsequent text.  As for similar bug recently fixed in findDeps().

Change-Id: Ie5329ec633c23a554b42a6351723c980e27fb9a9
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>

qmake/generators/makefiledeps.cpp

@@ -919,6 +919,8 @@ bool QMakeSourceFileInfo::findMocs(SourceFile *file)
                             ++line_count;
                         }
                     }
+                } else { // not a comment, in fact; undo the extra x++ we did.
+                    x--;
                 }
             }
         } else if (buffer[x] == '\'' || buffer[x] == '"') {

tests/auto/tools/qmake/testdata/findMocs/object7.h

@@ -33,6 +33,7 @@
 
 /**//*'*/
 #include <QObject>
+#define bogon /"/*"
 
 class Object7 : public QObject
 {