avfilter/af_anlmdn: avoid creating frames with zero samples

diff --git a/libavfilter/af_anlmdn.c b/libavfilter/af_anlmdn.c
index 5c881f6fd260213e896a56b4014aead2a7a080ea..93b76e0dffceb7b7edf95845ac401173ddbb5ab0 100644 (file)
--- a/libavfilter/af_anlmdn.c
+++ b/libavfilter/af_anlmdn.c
@@ -317,7 +317,7 @@ static int request_frame(AVFilterLink *outlink)
 
         if (s->eof_left < 0)
             s->eof_left = av_audio_fifo_size(s->fifo) - (s->S + s->K);
-        if (s->eof_left < 0)
+        if (s->eof_left <= 0)
             return AVERROR_EOF;
         in = ff_get_audio_buffer(outlink, s->H);
         if (!in)