Fix macro to use ; instead of ,

This gets rid of some warnings in later gcc versions.

svn path=/trunk/icecast/; revision=5875

src/md5.c

@@ -185,7 +185,7 @@ void MD5Final(unsigned char digest[HASH_LEN], struct MD5Context *ctx)
 # define F4(x, y, z) (y ^ (x | ~z))
 
 /* This is the central step in the MD5 algorithm. */
-# define MD5STEP(f, w, x, y, z, data, s) ( w += f(x, y, z) + data,  w = (w<<s) | (w>>(32-s)),  w += x )
+# define MD5STEP(f, w, x, y, z, data, s) ( w += f(x, y, z) + data;  w = (w<<s) | (w>>(32-s));  w += x )
 
 /*
  * The core of the MD5 algorithm, this alters an existing MD5 hash to