Fix \be blur start position.
Fix \be blur start position.

git-svn-id: 947b4ff483bb4cc5004120385d99e48ac0944466@28837 b3059339-0415-0410-9bf9-f77b7e298cf2

tgoyne/libass,Distrotech/libass,richardpl/libass,asimonov-im/libass,tgoyne/libass,xbmc/libass,torque/libass,mwgoldsmith/libass,vault/libass,rhlee/libass,sanyaade-g2g-repos/libass,asimonov-im/libass,libass/libass,torque/libass,astiob/libass,Akemi/libass,pigoz/libass-ct,mwgoldsmith/libass,richardpl/libass,blinkseb/libass,torque/libass,blinkseb/libass,grigorig/libass,vault/libass,rhlee/libass,stps/libass,sanyaade-g2g-repos/libass,richardpl/libass,pigoz/libass-ct,Akemi/libass,astiob/libass,stps/libass,Akemi/libass,MrSmile/libass,grigorig/libass,stps/libass,sanyaade-g2g-repos/libass,ShiftMediaProject/libass,rhlee/libass,mwgoldsmith/libass,libass/libass,xbmc/libass,MrSmile/libass,Distrotech/libass,ShiftMediaProject/libass,Distrotech/libass,tgoyne/libass,blinkseb/libass,pigoz/libass-ct