QmlDesigner: Fix 'could not parse style sheet' runtime warning
QmlDesigner: Fix 'could not parse style sheet' runtime warning

Reviewed-by: Thomas Hartmann

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