Fix PTR resolving in lua resolver.

src/lua/lua_dns.c

@@ -237,6 +237,7 @@ lua_dns_resolver_resolve_common (lua_State *L,
 				return 1;
 			}
 			cbdata->to_resolve = rspamd_mempool_strdup (pool, ptr_str);
+			to_resolve = cbdata->to_resolve;
 			free (ptr_str);
 		}
 		lua_pushvalue (L, first + 3);

src/plugins/lua/once_received.lua

@@ -55,7 +55,7 @@ local function check_quantity_received (task)
 				else
 					task:insert_result(symbol_strict, 1)
 				end
-                return
+		    return
 			end
 
 			local i = true