Fixed possible crash on constructor completion
Fixed possible crash on constructor completion

When constructor completion was attempted on a base class specified in a
class declaration, a null pointer reference would occur.

Task-number: QTCREATORBUG-321
Reviewed-by: Christian Kamm <687e37a7866f5c6d83feb41198eb6d862161a68b@nokia.com>

martyone/sailfish-qtcreator,maui-packages/qt-creator,ostash/qt-creator-i18n-uk,Distrotech/qtcreator,jonnor/qt-creator,yinyunqiao/qtcreator,malikcjm/qtcreator,azat/qtcreator,pcacjr/qt-creator,martyone/sailfish-qtcreator,pcacjr/qt-creator,ostash/qt-creator-i18n-uk,syntheticpp/qt-creator,KDE/android-qt-creator,malikcjm/qtcreator,omniacreator/qtcreator,KDAB/KDAB-Creator,bakaiadam/collaborative_qt_creator,omniacreator/qtcreator,sandsmark/qtcreator-minimap,martyone/sailfish-qtcreator,syntheticpp/qt-creator,xianian/qt-creator,yinyunqiao/qtcreator,dmik/qt-creator-os2,maui-packages/qt-creator,amyvmiwei/qt-creator,xianian/qt-creator,pcacjr/qt-creator,danimo/qt-creator,kuba1/qtcreator,kuba1/qtcreator,dmik/qt-creator-os2,jonnor/qt-creator,jonnor/qt-creator,Distrotech/qtcreator,kuba1/qtcreator,amyvmiwei/qt-creator,danimo/qt-creator,yinyunqiao/qtcreator,danimo/qt-creator,omniacreator/qtcreator,jonnor/qt-creator,enricoros/k-qt-creator-inspector,kuba1/qtcreator,KDAB/KDAB-Creator,omniacreator/qtcreator,xianian/qt-creator,bakaiadam/collaborative_qt_creator,richardmg/qtcreator,azat/qtcreator,Distrotech/qtcreator,xianian/qt-creator,martyone/sailfish-qtcreator,maui-packages/qt-creator,colede/qtcreator,colede/qtcreator,renatofilho/QtCreator,malikcjm/qtcreator,kuba1/qtcreator,ostash/qt-creator-i18n-uk,duythanhphan/qt-creator,darksylinc/qt-creator,enricoros/k-qt-creator-inspector,syntheticpp/qt-creator,danimo/qt-creator,syntheticpp/qt-creator,darksylinc/qt-creator,malikcjm/qtcreator,KDE/android-qt-creator,hdweiss/qt-creator-visualizer,colede/qtcreator,omniacreator/qtcreator,azat/qtcreator,KDAB/KDAB-Creator,maui-packages/qt-creator,renatofilho/QtCreator,bakaiadam/collaborative_qt_creator,hdweiss/qt-creator-visualizer,richardmg/qtcreator,enricoros/k-qt-creator-inspector,darksylinc/qt-creator,darksylinc/qt-creator,farseerri/git_code,bakaiadam/collaborative_qt_creator,farseerri/git_code,xianian/qt-creator,duythanhphan/qt-creator,bakaiadam/collaborative_qt_creator,richardmg/qtcreator,amyvmiwei/qt-creator,Distrotech/qtcreator,yinyunqiao/qtcreator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,darksylinc/qt-creator,amyvmiwei/qt-creator,amyvmiwei/qt-creator,duythanhphan/qt-creator,enricoros/k-qt-creator-inspector,KDAB/KDAB-Creator,pcacjr/qt-creator,sandsmark/qtcreator-minimap,richardmg/qtcreator,yinyunqiao/qtcreator,azat/qtcreator,danimo/qt-creator,ostash/qt-creator-i18n-uk,dmik/qt-creator-os2,ostash/qt-creator-i18n-uk,dmik/qt-creator-os2,KDE/android-qt-creator,KDE/android-qt-creator,azat/qtcreator,AltarBeastiful/qt-creator,darksylinc/qt-creator,farseerri/git_code,danimo/qt-creator,pcacjr/qt-creator,dmik/qt-creator-os2,yinyunqiao/qtcreator,danimo/qt-creator,pcacjr/qt-creator,danimo/qt-creator,farseerri/git_code,yinyunqiao/qtcreator,xianian/qt-creator,AltarBeastiful/qt-creator,colede/qtcreator,farseerri/git_code,martyone/sailfish-qtcreator,omniacreator/qtcreator,maui-packages/qt-creator,sandsmark/qtcreator-minimap,xianian/qt-creator,KDAB/KDAB-Creator,syntheticpp/qt-creator,kuba1/qtcreator,KDE/android-qt-creator,kuba1/qtcreator,bakaiadam/collaborative_qt_creator,sandsmark/qtcreator-minimap,amyvmiwei/qt-creator,danimo/qt-creator,renatofilho/QtCreator,KDE/android-qt-creator,hdweiss/qt-creator-visualizer,darksylinc/qt-creator,hdweiss/qt-creator-visualizer,omniacreator/qtcreator,Distrotech/qtcreator,renatofilho/QtCreator,richardmg/qtcreator,AltarBeastiful/qt-creator,KDE/android-qt-creator,sandsmark/qtcreator-minimap,ostash/qt-creator-i18n-uk,amyvmiwei/qt-creator,duythanhphan/qt-creator,malikcjm/qtcreator,richardmg/qtcreator,renatofilho/QtCreator,AltarBeastiful/qt-creator,martyone/sailfish-qtcreator,enricoros/k-qt-creator-inspector,syntheticpp/qt-creator,syntheticpp/qt-creator,duythanhphan/qt-creator,malikcjm/qtcreator,AltarBeastiful/qt-creator,azat/qtcreator,KDE/android-qt-creator,jonnor/qt-creator,maui-packages/qt-creator,kuba1/qtcreator,xianian/qt-creator,Distrotech/qtcreator,enricoros/k-qt-creator-inspector,jonnor/qt-creator,hdweiss/qt-creator-visualizer,martyone/sailfish-qtcreator,richardmg/qtcreator,duythanhphan/qt-creator,enricoros/k-qt-creator-inspector,ostash/qt-creator-i18n-uk,farseerri/git_code,sandsmark/qtcreator-minimap,amyvmiwei/qt-creator,Distrotech/qtcreator,pcacjr/qt-creator,renatofilho/QtCreator,AltarBeastiful/qt-creator,kuba1/qtcreator,dmik/qt-creator-os2,colede/qtcreator,colede/qtcreator,malikcjm/qtcreator,duythanhphan/qt-creator,martyone/sailfish-qtcreator,bakaiadam/collaborative_qt_creator,KDAB/KDAB-Creator,hdweiss/qt-creator-visualizer,xianian/qt-creator,colede/qtcreator,farseerri/git_code,darksylinc/qt-creator,AltarBeastiful/qt-creator,farseerri/git_code,dmik/qt-creator-os2,maui-packages/qt-creator