add an extra check for uci_lookup

diff --git a/list.c b/list.c
index 339ad3e336385b95246aed8dcddbeac92616a42a..7a703b22aa386403ab1f2ef6280e2d7cf3facd0b 100644 (file)
--- a/list.c
+++ b/list.c
@@ -236,7 +236,7 @@ int uci_lookup(struct uci_context *ctx, struct uci_element **res, struct uci_pac
        UCI_HANDLE_ERR(ctx);
        UCI_ASSERT(ctx, res != NULL);
        UCI_ASSERT(ctx, p != NULL);
-       UCI_ASSERT(ctx, uci_validate_name(section));
+       UCI_ASSERT(ctx, section && uci_validate_name(section));
        if (option)
                UCI_ASSERT(ctx, uci_validate_name(option));