[validator] fix return statement missing (FriendsOfSymfony1#352)

Author: connorhu

lib/validator/sfValidatorDecorator.class.php

@@ -63,6 +63,8 @@ public function getMessage($name)
     public function setMessage($name, $value)
     {
         $this->validator->setMessage($name, $value);
+
+        return $this;
     }
 
     /**
@@ -95,6 +97,8 @@ public function getOption($name)
     public function setOption($name, $value)
     {
         $this->validator->setOption($name, $value);
+
+        return $this;
     }
 
     /**
@@ -119,6 +123,8 @@ public function getOptions()
     public function setOptions($values)
     {
         $this->validator->setOptions($values);
+
+        return $this;
     }
 
     /**