minor #11992 [Console][Command][LogicException] The command name cannot be empty. #11991 (skafandri)

This PR was submitted for the 2.5 branch but it was merged into the 2.6-dev branch instead (closes #11992).

Discussion
----------

[Console][Command][LogicException] The command name cannot be empty. #11991

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #11991
| License       | MIT
| Doc PR        | #11991

Commits
-------

7d6fbd9 [Console][Command][LogicException] The command name cannot be empty. #11991

src/Symfony/Component/Console/Command/Command.php

@@ -65,7 +65,7 @@ class Command
         $this->configure();
 
         if (!$this->name) {
-            throw new \LogicException('The command name cannot be empty.');
+            throw new \LogicException(sprintf('The command defined in "%s" cannot have an empty name.', get_class($this)));
         }
     }
 

src/Symfony/Component/Console/Tests/Command/CommandTest.php

@@ -41,7 +41,7 @@ class CommandTest extends \PHPUnit_Framework_TestCase
 
     /**
      * @expectedException        \LogicException
-     * @expectedExceptionMessage The command name cannot be empty.
+     * @expectedExceptionMessage The command defined in "Symfony\Component\Console\Command\Command" cannot have an empty name.
      */
     public function testCommandNameCannotBeEmpty()
     {