avcodec/wmaprodec: reset offsets when error happens

Fixes #6250.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

diff --git a/libavcodec/wmaprodec.c b/libavcodec/wmaprodec.c
index 1ad1e2354136cbc14e8d1040d247702585253513..5b1fe40a422e3639c4e2bead452d50032451feba 100644 (file)
--- a/libavcodec/wmaprodec.c
+++ b/libavcodec/wmaprodec.c
@@ -1760,6 +1760,10 @@ static int xma_decode_packet(AVCodecContext *avctx, void *data,
             memcpy(&s->samples[s->current_stream * 2 + 1][s->offset[s->current_stream] * 512],
                    s->frames[s->current_stream]->extended_data[1], 512 * 4);
         s->offset[s->current_stream]++;
+    } else if (ret < 0) {
+        memset(s->offset, 0, sizeof(s->offset));
+        s->current_stream = 0;
+        return ret;
     }
 
     if (s->xma[s->current_stream].packet_done ||