nconfig: Fix segfault when menu is empty

nconf crush with segfault if press right arrow in empty menu.

Signed-off-by: Andrej Gelenberg <andrej.gelenberg@udo.edu>
Signed-off-by: Michal Marek <mmarek@suse.cz>

diff --git a/scripts/kconfig/nconf.c b/scripts/kconfig/nconf.c
index 762caf80ce37d3822d43bf0a151ffcf8b8a17d21..2ba71bcd38e65381aa347e093a2dc7b338d03dc0 100644 (file)
--- a/scripts/kconfig/nconf.c
+++ b/scripts/kconfig/nconf.c
@@ -676,6 +676,8 @@ static void *item_data(void)
        struct mitem *mcur;
 
        cur = current_item(curses_menu);
+       if (!cur)
+               return NULL;
        mcur = (struct mitem *) item_userptr(cur);
        return mcur->usrptr;