Revert "C++ editor: Fix potential crash in completion"
Revert "C++ editor: Fix potential crash in completion"

This reverts commit a395022a84149884771eefee9577ba2441ba45a4.

There are some undesired side effects...

Change-Id: I001ed375911a4ffda5bd25c804ce06f99be40e3c
Reviewed-on: http://codereview.qt.nokia.com/25
Reviewed-by: Leandro T. C. Melo <8f144cd741810d8c7b648cacf5b9b2f4e2ebcc1b@nokia.com>

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