catch the zero height font error BUG: 233534
catch the zero height font error
BUG: 233534

svn path=/trunk/KDE/kdelibs/kate/; revision=1146172

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