phpunit hack speeds up test execution

diff --git a/Composer/vendor/phpunit/phpunit/PHPUnit/Util/GlobalState.php b/Composer/vendor/phpunit/phpunit/PHPUnit/Util/GlobalState.php
index 2737985..baba04e 100644
--- a/Composer/vendor/phpunit/phpunit/PHPUnit/Util/GlobalState.php
+++ b/Composer/vendor/phpunit/phpunit/PHPUnit/Util/GlobalState.php
@@ -112,7 +112,7 @@ public static function backupGlobals(array $blacklist)
                 !in_array($key, $superGlobalArrays) &&
                 !in_array($key, $blacklist) &&
                 !$GLOBALS[$key] instanceof Closure) {
-                self::$globals['GLOBALS'][$key] = serialize($GLOBALS[$key]);
+                self::$globals['GLOBALS'][$key] = $GLOBALS[$key];
             }
         }
     }
@@ -138,16 +138,12 @@ public static function restoreGlobals(array $blacklist)
                 !in_array($key, $superGlobalArrays) &&
                 !in_array($key, $blacklist)) {
                 if (isset(self::$globals['GLOBALS'][$key])) {
-                    $GLOBALS[$key] = unserialize(
-                      self::$globals['GLOBALS'][$key]
-                    );
+                    $GLOBALS[$key] = self::$globals['GLOBALS'][$key];
                 } else {
                     unset($GLOBALS[$key]);
                 }
             }
         }
-
-        self::$globals = array();
     }
 
     protected static function backupSuperGlobalArray($superGlobalArray)

Meanwhile, this hack is obsolete for TYPO3 CMS core. We drastically reduced unit test bootstrap and the globals are much smaller now.