avformat/metadata: allow ff_metadata_conv() to be called with NULL saftely

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-01-17 22:51:07 +01:00
parent 447d71b892
commit ed7f1a5c20

View File

@ -33,7 +33,7 @@ void ff_metadata_conv(AVDictionary **pm, const AVMetadataConv *d_conv,
AVDictionary *dst = NULL;
const char *key;
if (d_conv == s_conv)
if (d_conv == s_conv || !pm)
return;
while ((mtag = av_dict_get(*pm, "", mtag, AV_DICT_IGNORE_SUFFIX))) {