Use better destructor (key may be only IS_STRING or IS_LONG).

Author: dstogov

ext/standard/var_unserializer.c

@@ -1,4 +1,4 @@
-/* Generated by re2c 1.0.1 */
+/* Generated by re2c 1.0.3 */
 #line 1 "ext/standard/var_unserializer.re"
 /*
   +----------------------------------------------------------------------+
@@ -509,7 +509,7 @@ static zend_always_inline int process_nested_data(UNSERIALIZE_PARAMETER, HashTab
 		}
 
 		var_push_dtor(var_hash, data);
-		zval_ptr_dtor(&key);
+		zval_ptr_dtor_str(&key);
 
 		if (elements && *(*p-1) != ';' && *(*p-1) != '}') {
 			(*p)--;

ext/standard/var_unserializer.re

@@ -513,7 +513,7 @@ string_key:
 		}
 
 		var_push_dtor(var_hash, data);
-		zval_ptr_dtor(&key);
+		zval_ptr_dtor_str(&key);
 
 		if (elements && *(*p-1) != ';' && *(*p-1) != '}') {
 			(*p)--;