Fix memory leak when creating repeated field via array.

php/ext/google/protobuf/type_check.c

@@ -461,8 +461,7 @@ void check_repeated_field(const zend_class_entry* klass, PHP_PROTO_LONG type,
           CACHED_PTR_TO_ZVAL_PTR((CACHED_VALUE*)memory) TSRMLS_CC);
     }
 
-    Z_DELREF_P(CACHED_TO_ZVAL_PTR(repeated_field));
-    RETURN_ZVAL(CACHED_TO_ZVAL_PTR(repeated_field), 1, 0);
+    RETURN_ZVAL(CACHED_TO_ZVAL_PTR(repeated_field), 1, 1);
 
   } else if (Z_TYPE_P(val) == IS_OBJECT) {
     if (!instanceof_function(Z_OBJCE_P(val), repeated_field_type TSRMLS_CC)) {

php/tests/memory_leak_test.php

@@ -105,6 +105,11 @@ $m = new TestMessage();
 $m->mergeFromString(hex2bin('F80601'));
 assert('F80601', bin2hex($m->serializeToString()));
 
+// Test create repeated field via array.
+$str_arr = array();
+$m = new TestMessage();
+$m->setRepeatedString($str_arr);
+
 # $from = new TestMessage();
 # $to = new TestMessage();
 # TestUtil::setTestMessage($from);