Fixes: out of array access
Fixes: 
62164/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DCA_fuzzer-6041088751960064

Found-by: continuous fuzzing process 
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
 libavcodec/dcadec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/dcadec.c b/libavcodec/dcadec.c
index 3e3e3053bbe..070a9ae094d 100644
--- a/libavcodec/dcadec.c
+++ b/libavcodec/dcadec.c
@@ -221,7 +221,7 @@ static int dcadec_decode_frame(AVCodecContext *avctx, 
AVFrame *frame,
                     && (prev_packet & DCA_PACKET_XLL)
                     && (s->packet & DCA_PACKET_CORE))
                     s->packet |= DCA_PACKET_XLL | DCA_PACKET_RECOVERY;
-                else if (ret == AVERROR(ENOMEM) || (avctx->err_recognition & 
AV_EF_EXPLODE))
+                else if (ret == AVERROR(ENOMEM) || (avctx->err_recognition & 
AV_EF_EXPLODE) && ret != AVERROR(EAGAIN))
                     return ret;
             } else {
                 s->packet |= DCA_PACKET_XLL;
-- 
2.17.1

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