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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
1 changed files with 1 additions and 1 deletions
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libavformat/metadata.c
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@ -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))) {