execute_data->return_value is not used for internal functions

Author: dstogov

Zend/zend_execute_API.c

@@ -822,7 +822,6 @@ int zend_call_function(zend_fcall_info *fci, zend_fcall_info_cache *fci_cache) /
 		int call_via_handler = (func->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE) != 0;
 		ZVAL_NULL(fci->retval);
 		call->prev_execute_data = EG(current_execute_data);
-		call->return_value = NULL; /* this is not a constructor call */
 		EG(current_execute_data) = call;
 		if (EXPECTED(zend_execute_internal == NULL)) {
 			/* saves one function call if zend_execute_internal is not used */