ncurses: Fix CVE-2023-50495

Backport a patch [1] to fix CVE-2023-50495.

[1] http://ncurses.scripts.mit.edu/?p=ncurses.git;a=commitdiff;h=7723dd6799ab10b32047ec73b14df9f107bafe99



Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>