Prevent the crash on fuzzed files as reported in bug 63.
---
 libavcodec/zmbv.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/zmbv.c b/libavcodec/zmbv.c
index 8e0db8b..5d4254a 100644
--- a/libavcodec/zmbv.c
+++ b/libavcodec/zmbv.c
@@ -428,6 +428,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, 
int *got_frame, AVPac
         c->fmt = buf[3];
         c->bw = buf[4];
         c->bh = buf[5];
+        c->decode_intra = NULL;
+        c->decode_xor = NULL;
 
         buf += 6;
         len -= 6;
-- 
1.8.0.2

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