properly return *this in operator=
properly return *this in operator=

svn path=/trunk/KDE/kdesdk/kate/; revision=1125484

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