Code model: Fix endless loop in AbstractEditorSupport::functionAt
Code model: Fix endless loop in AbstractEditorSupport::functionAt

used by CDB debugger tooltip (introduced by
 A 354b9712e4655040930a9f18de4e6b4c71dc42d9).

Reviewed-by: Christian Kamm <687e37a7866f5c6d83feb41198eb6d862161a68b@nokia.com>
Rubber-stamped-by: dt

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