The return value of wattrset() is being ignored in the code and newer compilers complain about this e.g.

HOSTCC  scripts/kconfig/lxdialog/checklist.o
scripts/kconfig/lxdialog/checklist.c: In function print_item:
scripts/kconfig/lxdialog/checklist.c:40: warning: value computed is not used
scripts/kconfig/lxdialog/checklist.c:46: warning: value computed is not used

Let the compiler know that ignore is intentional.

Signed-off-by: Sanjeev Premi <premi@ti.com>