PathChooser: Small cleanup
PathChooser: Small cleanup

Consistently use the same method to trigger re-evaluations.

Change-Id: I3af86ec8f811cfb64fcfd3784c8d3e79a8154b21
Reviewed-by: Daniel Teske <d8a411aec9a206efedb4d45b75fe8d13f1e2b628@digia.com>

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