Fix test expectations

Author: TimWolla

ext/zend_test/tests/attribute-deprecated.phpt

@@ -22,15 +22,19 @@ var_dump($reflection->isDeprecated());
 Deprecated: Function zend_test_deprecated() is deprecated in %s on line %d
 
 Deprecated: Function zend_test_deprecated_attr() is deprecated, custom message in %s on line %d
-object(Deprecated)#%d (1) {
+object(Deprecated)#%d (2) {
   ["message"]=>
   string(14) "custom message"
+  ["since"]=>
+  NULL
 }
 bool(true)
 
 Deprecated: Constant _ZendTestClass::ZEND_TEST_DEPRECATED_ATTR is deprecated, custom message in %s on line %d
-object(Deprecated)#%d (1) {
+object(Deprecated)#%d (2) {
   ["message"]=>
   string(14) "custom message"
+  ["since"]=>
+  NULL
 }
 bool(true)