fix order of returned array values for mocked hrtime()

Author: xabbuh

ClockMock.php

@@ -100,7 +100,7 @@ public static function hrtime($asNumber = false)
             return PHP_INT_SIZE === 8 ? (int) $number : (float) $number;
         }
 
-        return [(int) $ns, (int) self::$now];
+        return [(int) self::$now, (int) $ns];
     }
 
     public static function register($class)

Tests/ClockMockTest.php

@@ -72,7 +72,7 @@ public function testGmDate()
 
     public function testHrTime()
     {
-        $this->assertSame([125000000, 1234567890], hrtime());
+        $this->assertSame([1234567890, 125000000], hrtime());
     }
 
     public function testHrTimeAsNumber()