Squish: Do not crash on fail in getEditorForFileSuffix()
Squish: Do not crash on fail in getEditorForFileSuffix()

Change-Id: I3d3519e2bb203e52afd2785aac46997616b4ca4b
Reviewed-by: Robert Loehning <1f928983f879a6fe326acd94487f754cc16e1fe4@digia.com>

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