Fix warning when building with Qt 4
Fix warning when building with Qt 4

Change-Id: I52b6b84732cf363b06ea248eeabdc99d89fb4beb
Reviewed-by: Tobias Hunger <012f8d714267bccc9d4766fbeace9f175fcc70c4@digia.com>

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