[BUGFIX] Semaphore test: release system resources

The tests now properly destroy occupied system resources.

Resolves: #77364
Releases: master, 7.6
Change-Id: I54bd86385f9418ba9e7f3cba3bae440d1fd82d2d
Reviewed-on: https://review.typo3.org/49329


Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Bamboo TYPO3com <info@typo3.com>

typo3/sysext/core/Tests/Unit/Locking/SemaphoreLockStrategyTest.php

@@ -40,5 +40,6 @@ class SemaphoreLockStrategyTest extends UnitTestCase
         $lock = new SemaphoreLockStrategy('99999');
         $this->assertTrue($lock->acquire());
         $lock->release();
+        $lock->destroy();
     }
 }