Fixed 2 compilation warnings

src/map/channel.c

@@ -507,7 +507,6 @@ struct Channel* channel_name2channel(char *chname, struct map_session_data *sd,
 	}
 	else
 		return (struct Channel*) strdb_get(channel_db, chname + 1);
-	return NULL;
 }
 
 /**

src/map/pc_groups.h

@@ -56,7 +56,7 @@ enum e_pc_permission {
 
 static const struct {
 	const char *name;
-	unsigned int permission;
+	enum e_pc_permission permission;
 } pc_g_permission_name[] = {
 	{ "can_trade", PC_PERM_TRADE },
 	{ "can_party", PC_PERM_PARTY },