menuconfig: fix to center checklist correctly in a corner case

Get series with b4

b4 am [email protected]

Versions newest first

#	Subject and files	Size	Replies	Applied
1/2	menuconfig: fix to center checklist correctly in a corner case`scripts/kconfig/lxdialog/checklist.c`	+1 -0	1 reply
2/2	menuconfig: truncate list items`scripts/kconfig/lxdialog/checklist.c`	+7 -2	2 replies

None of the 2 patches has a Reviewed-by or Acked-by.

Patch	Randy Dunlap
1/2	T-b
2/2	T-b

Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.