comment a possible memory leak

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@21988 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_features.c

@@ -2091,6 +2091,7 @@ static int load_config(void)
 				}
 
 				ast_register_feature(feature);
+				/* XXX do we need to free it if mallocd ? */
 				
 				if (option_verbose >=1)
 					ast_verbose(VERBOSE_PREFIX_2 "Mapping Feature '%s' to app '%s' with code '%s'\n", var->name, app, exten);