avfilter/vf_thumbnail: fix possible crash on error

SaschaVasarrhelyi · Feb 10, 2020 · e63a664 · e63a664
1 parent 32bc0e0
commit e63a664
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/libavfilter/vf_thumbnail.c b/libavfilter/vf_thumbnail.c
@@ -162,7 +162,7 @@ static av_cold void uninit(AVFilterContext *ctx)
 {
     int i;
     ThumbContext *s = ctx->priv;
-    for (i = 0; i < s->n_frames && s->frames[i].buf; i++)
+    for (i = 0; i < s->n_frames && s->frames && s->frames[i].buf; i++)
         av_frame_free(&s->frames[i].buf);
     av_freep(&s->frames);
 }