X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavfilter%2Favfiltergraph.c;h=2fe4f0b0f9b7ea6b2181a8356e4bcb15d0fe4c8a;hb=3ad5d4df9ce794d3eeb0f526c5f3e446bf97c616;hp=a149f8fb6d631adcee9f80217c6faad0f9df0193;hpb=1f1ec958f6c68a5ceafea206a99c895f62d0f3ec;p=ffmpeg

diff --git a/libavfilter/avfiltergraph.c b/libavfilter/avfiltergraph.c
index a149f8fb6d6..2fe4f0b0f9b 100644
--- a/libavfilter/avfiltergraph.c
+++ b/libavfilter/avfiltergraph.c
@@ -419,8 +419,10 @@ static int can_merge_formats(AVFilterFormats *a_arg,
         av_freep(&ret);
         return 1;
     } else {
-        av_freep(&a->formats);
-        av_freep(&b->formats);
+        if (a)
+            av_freep(&a->formats);
+        if (b)
+            av_freep(&b->formats);
         av_freep(&a);
         av_freep(&b);
         return 0;