Remove unused variable j.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@20398 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/dca.c

@@ -752,7 +752,7 @@ static void qmf_32_subbands(DCAContext * s, int chans,
                             float scale, float bias)
 {
     const float *prCoeff;
-    int i, j;
+    int i;
 
     int subindex;