Add missing ecx clobber in diff_MMX code (yes, that function is duplicated).

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@28940 b3059339-0415-0410-9bf9-f77b7e298cf2

libmpcodecs/vf_decimate.c

@@ -55,7 +55,7 @@ static int diff_MMX(unsigned char *old, unsigned char *new, int os, int ns)
 		"emms \n\t"
 		: 
 		: "S" (old), "D" (new), "a" ((long)os), "b" ((long)ns), "d" (out)
-		: "memory"
+		: "%ecx", "memory"
 		);
 	return out[0]+out[1]+out[2]+out[3];
 }

libmpcodecs/vf_divtc.c

@@ -69,7 +69,7 @@ static int diff_MMX(unsigned char *old, unsigned char *new, int os, int ns)
 	"emms \n\t"
 	:
 	: "S" (old), "D" (new), "a" ((long)os), "b" ((long)ns), "d" (out)
-	: "memory"
+	: "%ecx", "memory"
 	);
    return out[0]+out[1]+out[2]+out[3];
    }