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

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
11 years ago · ed7f1a5c20
parent 447d71b892
commit ed7f1a5c20
1 changed files with 1 additions and 1 deletions
--- a/libavformat/metadata.c
+++ b/libavformat/metadata.c
@ -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))) {