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-rw-r--r--libavcodec/interplayacm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/interplayacm.c b/libavcodec/interplayacm.c
index cff79eb6b2..3704d1a2f2 100644
--- a/libavcodec/interplayacm.c
+++ b/libavcodec/interplayacm.c
@@ -529,7 +529,7 @@ static int decode_block(InterplayACMContext *s)
for (i = 1, x = -val; i <= count; i++) {
s->midbuf[-i] = x;
- x -= val;
+ x -= (unsigned)val;
}
ret = fill_block(s);