QmlJS: Fix crash in debugger tooltips
QmlJS: Fix crash in debugger tooltips

Check that the node under cursor is indeed a UiObjectMember

Reviewed-by: Christiaan Janssen
Task-number: QTCREATORBUG-2760

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