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-rw-r--r--libavfilter/vsrc_buffer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavfilter/vsrc_buffer.c b/libavfilter/vsrc_buffer.c
index d003add88b..ba00b2b651 100644
--- a/libavfilter/vsrc_buffer.c
+++ b/libavfilter/vsrc_buffer.c
@@ -209,7 +209,7 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
static av_cold void uninit(AVFilterContext *ctx)
{
BufferSourceContext *s = ctx->priv;
- while (av_fifo_size(s->fifo)) {
+ while (s->fifo && av_fifo_size(s->fifo)) {
AVFilterBufferRef *buf;
av_fifo_generic_read(s->fifo, &buf, sizeof(buf), NULL);
avfilter_unref_buffer(buf);