[FFmpeg-cvslog] lavc/ass_split: check for NULL pointer in ff_ass_split_override_codes().

[Carl Eugen Hoyos]

Clément Bœsch <git <at> videolan.org> writes:

> It also fixes a crash when trying to split a dialog with text=NULL
> (which seems to happen when the text of the dialog is empty); basically,
> this commit fixes crashes when trying to encode an empty text subtitle
> dialog (see subrip and mov_text encoders).
> 
> Fixes Ticket2048.

Should this patch be backported?

Thank you, Carl Eugen