commit cc38593: [Minor] Fix alien userdata printing

[Vsevolod Stakhov]

Author: Vsevolod Stakhov
Date: 2019-03-26 12:36:19 +0000
URL: https://github.com/rspamd/rspamd/commit/cc3859371db71e6c1d4d8b89a51201fd66be5329

[Minor] Fix alien userdata printing

---
 src/lua/lua_logger.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/lua/lua_logger.c b/src/lua/lua_logger.c
index abfc3e1fa..20b59efa7 100644
--- a/src/lua/lua_logger.c
+++ b/src/lua/lua_logger.c
@@ -357,16 +357,14 @@ lua_logger_out_userdata (lua_State *L, gint pos, gchar *outbuf, gsize len,
 		}
 	}
 	else {
+		lua_pop (L, 1);
 		lua_pushstring (L, "class");
 		lua_gettable (L, -2);
 
-		if (!lua_isstring (L, -1)) {
-			lua_settop (L, top);
-
-			return 0;
+		if (lua_isstring (L, -1)) {
+			str = lua_tostring (L, -1);
+			converted_to_str = TRUE;
 		}
-
-		str = lua_tostring (L, -1);
 	}
 
 	if (converted_to_str) {