cmdutils: add codec_opts parameter to setup_find_stream_info_opts()

Avoid brittle and obfuscating reference to a global.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

cmdutils.c

@@ -806,7 +806,7 @@ AVDictionary *filter_codec_opts(AVDictionary *opts, enum CodecID codec_id, int e
     return ret;
 }
 
-AVDictionary **setup_find_stream_info_opts(AVFormatContext *s)
+AVDictionary **setup_find_stream_info_opts(AVFormatContext *s, AVDictionary *codec_opts)
 {
     int i;
     AVDictionary **opts;