* @section: section name
* @option: option name (optional)
*/
-extern int uci_delete(struct uci_context *ctx, struct uci_package *p, char *section, char *option);
+extern int uci_delete(struct uci_context *ctx, struct uci_package *p, const char *section, const char *option);
/**
* uci_save: save change history for a package