debugger: improve QWeakPointer dumper
debugger: improve QWeakPointer dumper

strongref == -1 is valid

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