DebuggerKitInformation: Handle null QVariants
DebuggerKitInformation: Handle null QVariants

Change-Id: Iac2b3fde2d7357d8c00db05ed4ad39e6b5a861e9
Reviewed-by: Eike Ziller <c142da16c73a95a82d35191bcc55b22835617128@digia.com>
Reviewed-by: Friedemann Kleint <1b9f2592239daaec4856ccc1cfb4d2d55b35fb71@digia.com>

kuba1/qtcreator,omniacreator/qtcreator,amyvmiwei/qt-creator,danimo/qt-creator,darksylinc/qt-creator,farseerri/git_code,richardmg/qtcreator,darksylinc/qt-creator,omniacreator/qtcreator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,AltarBeastiful/qt-creator,xianian/qt-creator,AltarBeastiful/qt-creator,danimo/qt-creator,farseerri/git_code,malikcjm/qtcreator,danimo/qt-creator,richardmg/qtcreator,amyvmiwei/qt-creator,maui-packages/qt-creator,martyone/sailfish-qtcreator,danimo/qt-creator,maui-packages/qt-creator,farseerri/git_code,richardmg/qtcreator,amyvmiwei/qt-creator,martyone/sailfish-qtcreator,amyvmiwei/qt-creator,omniacreator/qtcreator,xianian/qt-creator,Distrotech/qtcreator,xianian/qt-creator,Distrotech/qtcreator,farseerri/git_code,darksylinc/qt-creator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,colede/qtcreator,xianian/qt-creator,richardmg/qtcreator,danimo/qt-creator,kuba1/qtcreator,Distrotech/qtcreator,maui-packages/qt-creator,xianian/qt-creator,malikcjm/qtcreator,darksylinc/qt-creator,malikcjm/qtcreator,farseerri/git_code,malikcjm/qtcreator,omniacreator/qtcreator,malikcjm/qtcreator,AltarBeastiful/qt-creator,AltarBeastiful/qt-creator,malikcjm/qtcreator,richardmg/qtcreator,colede/qtcreator,xianian/qt-creator,maui-packages/qt-creator,AltarBeastiful/qt-creator,amyvmiwei/qt-creator,danimo/qt-creator,kuba1/qtcreator,xianian/qt-creator,Distrotech/qtcreator,duythanhphan/qt-creator,danimo/qt-creator,darksylinc/qt-creator,Distrotech/qtcreator,maui-packages/qt-creator,darksylinc/qt-creator,AltarBeastiful/qt-creator,martyone/sailfish-qtcreator,colede/qtcreator,colede/qtcreator,kuba1/qtcreator,farseerri/git_code,duythanhphan/qt-creator,kuba1/qtcreator,duythanhphan/qt-creator,colede/qtcreator,malikcjm/qtcreator,Distrotech/qtcreator,danimo/qt-creator,amyvmiwei/qt-creator,maui-packages/qt-creator,darksylinc/qt-creator,xianian/qt-creator,omniacreator/qtcreator,duythanhphan/qt-creator,amyvmiwei/qt-creator,duythanhphan/qt-creator,Distrotech/qtcreator,danimo/qt-creator,martyone/sailfish-qtcreator,omniacreator/qtcreator,kuba1/qtcreator,maui-packages/qt-creator,richardmg/qtcreator,kuba1/qtcreator,duythanhphan/qt-creator,xianian/qt-creator,duythanhphan/qt-creator,kuba1/qtcreator,kuba1/qtcreator,omniacreator/qtcreator,colede/qtcreator,richardmg/qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,farseerri/git_code,amyvmiwei/qt-creator,AltarBeastiful/qt-creator,colede/qtcreator,farseerri/git_code,darksylinc/qt-creator