Add order error code

mobile/util/errcode.php

@@ -18,6 +18,7 @@ class errcode extends SplEnum
 
     const ErrSpecial  = 10100;
     const ErrCart  = 10200;
+    const ErrOrder  = 10300;
 
     const ErrDB      = 11000;
     const ErrSms 	 = 12000;