[6.0] 74819fb07 Ignore a curses function return value

[Dridi Boukelmoune]

commit 74819fb07587e9dda0da975c8792956ab804983e
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Mon Jan 21 09:50:02 2019 +0000

    Ignore a curses function return value

diff --git a/flint.lnt b/flint.lnt
index 11169b612..fc6666be4 100644
--- a/flint.lnt
+++ b/flint.lnt
@@ -209,6 +209,7 @@
 -esym(534, intrflush)
 -esym(534, keypad)
 -esym(534, mvprintw)
+-esym(534, waddnstr)
 -esym(534, mvwprintw)
 -esym(534, nodelay)
 -esym(534, noecho)