Let QScrollBar take care of the wheel event
Let QScrollBar take care of the wheel event

BUG:239070

svn path=/trunk/KDE/kdelibs/kate/; revision=1188021

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