changed exception message

Author: GDIBass

src/Symfony/Component/Workflow/EventListener/GuardListener.php

@@ -57,7 +57,7 @@ private function getVariables(GuardEvent $event)
         $token = $this->tokenStorage->getToken();
 
         if (null === $token) {
-            throw new InvalidTokenConfigurationException('No token is set');
+            throw new InvalidTokenConfigurationException(sprintf('There are no token available for workflow %s', $event->getWorkflowName()));
         }
 
         if (null !== $this->roleHierarchy) {

src/Symfony/Component/Workflow/Exception/InvalidTokenConfigurationException.php

@@ -18,4 +18,4 @@
  */
 class InvalidTokenConfigurationException extends LogicException implements ExceptionInterface
 {
-}
+}

src/Symfony/Component/Workflow/Tests/EventListener/GuardListenerTest.php

@@ -71,7 +71,7 @@ public function testWithSupportedEventAndAccept()
 
     /**
      * @expectedException \Symfony\Component\Workflow\Exception\InvalidTokenConfigurationException
-     * @expectedExceptionMessage No token is set
+     * @expectedExceptionMessage There are no token available for workflow unnamed
      */
     public function testWithNoTokenStorage()
     {