avcodec/dxv: make prev variable unsigned

diff --git a/libavcodec/dxv.c b/libavcodec/dxv.c
index b51d6393b040bd15197cd2bd04badeb3ca6220b8..71d85208d869761d7571f3da307ac0a149bb9fd6 100644 (file)
--- a/libavcodec/dxv.c
+++ b/libavcodec/dxv.c
@@ -867,8 +867,8 @@ static int dxv_decompress_dxt5(AVCodecContext *avctx)
 {
     DXVContext *ctx = avctx->priv_data;
     GetByteContext *gbc = &ctx->gbc;
-    uint32_t value, op;
-    int idx, prev, state = 0;
+    uint32_t value, op, prev;
+    int idx, state = 0;
     int pos = 4;
     int run = 0;
     int probe, check;