fix P3 player has permission check.

src/net/milkbowl/vault/permission/plugins/Permission_Permissions3.java

@@ -122,6 +122,10 @@ public class Permission_Permissions3 extends Permission {
     }
 
     @Override
+    public boolean has(Player player, String permission) {
+        return has(player.getWorld().getName(), player.getName(), permission);
+    }
+
     public boolean playerAddGroup(String worldName, String playerName, String groupName) {
         if (worldName == null)
             worldName = "*";