unit = NULL, the function could pass NULL to strcmp and cause a segfault.

Patch by Kamil Nowosad, k nowosad % students mimuw edu pl.

Original thread:
Subject: [PATCH] small bugfix in av_find_opt()
Date: 03/23/2007 12:20 PM


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@8553 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b