add break statement

lib/dialects/postgres/query.js

@@ -269,7 +269,7 @@ module.exports = (function() {
             message: 'Could not further parse error message.'
             message: 'Could not further parse error message.'
           });
           });
         }
         }
-
+        break;
       default:
       default:
         return new sequelizeErrors.DatabaseError(err);
         return new sequelizeErrors.DatabaseError(err);
     }
     }