Add missing author

Author: realFlowControl

ext/zend_test/zend_mm_observer.c

@@ -10,7 +10,7 @@
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
-  | Author:                                                              |
+  | Author: Florian Engelhardt <florian@engelhardt.tc>                   |
   +----------------------------------------------------------------------+
 */