[mucurses] Ensure SLK labels are always terminated

Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/hci/mucurses/slk.c b/src/hci/mucurses/slk.c
index b900c068a18e5975cbeded70a466a4fd92486daa..169e0120bdc6261a3c12bf9d155aaa0a1a78656c 100644 (file)
--- a/src/hci/mucurses/slk.c
+++ b/src/hci/mucurses/slk.c
@@ -359,7 +359,7 @@ int slk_set ( int labnum, const char *label, int fmt ) {
                return ERR;
 
        strncpy(slks->fkeys[labnum].label, label,
-               sizeof(slks->fkeys[labnum].label));
+               (sizeof(slks->fkeys[labnum].label) - 1));
        slks->fkeys[labnum].fmt = fmt;
 
        return OK;