af_channelmap: free old extended_data on reallocation

Prevents writes to freed memory and the leak of the old extended data. Fixes CID732303.
12 years ago · 1afd7a118f
parent 18ff4d2020
commit 1afd7a118f
1 changed files with 1 additions and 1 deletions
--- a/libavfilter/af_channelmap.c
+++ b/libavfilter/af_channelmap.c
@ -338,8 +338,8 @@ static int channelmap_filter_samples(AVFilterLink *inlink, AVFilterBufferRef *bu
            if (buf->extended_data == buf->data) {
                buf->extended_data = new_extended_data;
            } else {
-                buf->extended_data = new_extended_data;
                av_free(buf->extended_data);
+                buf->extended_data = new_extended_data;
            }
        } else if (buf->extended_data != buf->data) {
            av_free(buf->extended_data);