tweak warning level up.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3131 d0543943-73ff-0310-b7d9-9358b9ac24b2

libs/codec/gsm/inc/private.h

@@ -33,7 +33,7 @@ struct gsm_state {
 	word		v[9];		/* short_term.c, synthesis	*/
 	word		msr;		/* decoder.c,	Postprocessing	*/
 
-	char		verbose;	/* only used if !NDEBUG		*/
+	int			verbose;	/* only used if !NDEBUG		*/
 	char		fast;		/* only used if FAST		*/
 
 	char		wav_fmt;	/* only used if WAV49 defined	*/