DiffEditor: Do not soft-assert when saving
DiffEditor: Do not soft-assert when saving

Do not soft-assert when saving a diff that was saved before.

Change-Id: Iebe06f2bf2ab966869181e0237ed6cc69b2f6045
Reviewed-by: Jarek Kobus <021d51876099fe64879cc5072886d1d0ff71e1ac@theqtcompany.com>

xianian/qt-creator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,Distrotech/qtcreator,Distrotech/qtcreator,xianian/qt-creator,danimo/qt-creator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,xianian/qt-creator,danimo/qt-creator,xianian/qt-creator,martyone/sailfish-qtcreator,danimo/qt-creator,Distrotech/qtcreator,xianian/qt-creator,danimo/qt-creator,danimo/qt-creator,Distrotech/qtcreator,xianian/qt-creator,danimo/qt-creator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,danimo/qt-creator,xianian/qt-creator,danimo/qt-creator,xianian/qt-creator,Distrotech/qtcreator,Distrotech/qtcreator,martyone/sailfish-qtcreator,Distrotech/qtcreator,martyone/sailfish-qtcreator,xianian/qt-creator,danimo/qt-creator