fix return values for readonly mode, just return false
fix return values for readonly mode, just return false

svn path=/trunk/kdelibs/kate/; revision=262788

hlamer/kate,hlamer/kate,jfmcarreira/kate,hlamer/kate,hlamer/kate,hlamer/kate,DickJ/kate,cmacq2/kate,sandsmark/kate,hlamer/kate,sandsmark/kate,hlamer/kate,cmacq2/kate,jfmcarreira/kate,DickJ/kate,sandsmark/kate,DickJ/kate,jfmcarreira/kate,cmacq2/kate,hlamer/kate,sandsmark/kate,hlamer/kate,DickJ/kate,hlamer/kate