- Fixed warning notice of nullpo_retv (follow up to r15816)

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@15817 54d463be-8e91-2dee-dedb-b68131a5f0ec

src/map/intif.c

@@ -199,7 +199,7 @@ int intif_main_message(struct map_session_data* sd, const char* message)
 {
 	char output[256];
 
-	nullpo_retv(sd);
+	nullpo_ret(sd);
 
 	// format the message for main broadcasting
 	snprintf( output, sizeof(output), msg_txt(386), sd->status.name, message );