need to add to the pointer, not the pointee

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3403 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/endpoints/mod_sofia/mod_sofia.c

@@ -4161,7 +4161,7 @@ static void sip_r_register(int status,
 	qrealm = duprealm;
 	
 	while(*qrealm && *qrealm == '"') {
-		*qrealm++;
+		qrealm++;
 	}
 	if ((p = strchr(qrealm, '"'))) {
 		*p = '\0';