DebuggerItemModel: Fix assert.
DebuggerItemModel: Fix assert.

Change-Id: Iff0adabe3e2e7fc0b84ce90557a3da8a6c4030fe
Reviewed-by: Tobias Hunger <012f8d714267bccc9d4766fbeace9f175fcc70c4@digia.com>

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