trying changes from feedback

Author: devnexen

ext/sysvmsg/sysvmsg.c

@@ -372,14 +372,13 @@ PHP_FUNCTION(msg_send)
 		PHP_VAR_SERIALIZE_DESTROY(var_hash);
 
 		message_len = smart_str_get_len(&msg_var);
-		if (!message_len) {
-			RETURN_FALSE;
-		}
 
 		/* NB: php_msgbuf is 1 char bigger than a long, so there is no need to
 		 * allocate the extra byte. */
 		messagebuffer = safe_emalloc(message_len, 1, sizeof(struct php_msgbuf));
-		memcpy(messagebuffer->mtext, ZSTR_VAL(msg_var.s), message_len + 1);
+		zend_string *str = smart_str_extract(&msg_var);
+		memcpy(messagebuffer->mtext, ZSTR_VAL(str), message_len + 1);
+		zend_string_release(str);
 		smart_str_free(&msg_var);
 	} else {
 		char *p;