[Minor] Fix some issues

diff --git a/src/lua/lua_config.c b/src/lua/lua_config.c
index 5a4d3efdc403e73f30df6abb7b56d62ea0850d8e..6abddc4ff112b085c6f01a998c2781d2c3650a2e 100644 (file)
--- a/src/lua/lua_config.c
+++ b/src/lua/lua_config.c
@@ -3352,15 +3352,21 @@ lua_metric_symbol_inserter (gpointer k, gpointer v, gpointer ud)
                lua_settable (L, -3);
        }
 
-       lua_pushstring (L, "groups");
-       lua_createtable (L, s->groups->len, 0);
+       if (s->groups && s->groups->len > 0) {
+               lua_pushstring (L, "groups");
+               lua_createtable (L, s->groups->len, 0);
 
-       PTR_ARRAY_FOREACH (s->groups, i, gr) {
-               lua_pushstring (L, gr->name);
-               lua_rawseti (L, -2, i + 1); /* Groups[i + 1] = group_name */
-       }
+               PTR_ARRAY_FOREACH (s->groups, i, gr) {
+                       lua_pushstring (L, gr->name);
+                       lua_rawseti (L, -2, i + 1); /* Groups[i + 1] = group_name */
+               }
 
-       lua_settable (L, -3); /* Groups -> groups_table */
+               lua_settable (L, -3); /* Groups -> groups_table */
+       }
+       else {
+               lua_createtable (L, 0, 0);
+               lua_setfield (L, -2, "groups");
+       }
 
        lua_settable (L, -3); /* Symname -> table */
 }
@@ -3380,7 +3386,7 @@ lua_config_get_symbols (lua_State *L)
                lua_createtable (L, 0, g_hash_table_size (cfg->symbols));
                g_hash_table_foreach (cfg->symbols,
                                lua_metric_symbol_inserter,
-                               &cfg);
+                               &cbd);
        }
        else {
                return luaL_error (L, "invalid arguments");