ass.c: handle event alloc fails
ass.c: handle event alloc fails

astiob/libass,Akemi/libass,ShiftMediaProject/libass,xbmc/libass,Akemi/libass,astiob/libass,MrSmile/libass,libass/libass,libass/libass,xbmc/libass,Akemi/libass,MrSmile/libass,ShiftMediaProject/libass