curses: Fix build with ncurses 6.2
* pinentry/pinentry-curses.c (curses_cmd_handler): Use renamed variable. * pinentry/pinentry.c (pinentry_reset, pinentry_parse_opts) (option_handler, cmd_getinfo) Use renamed variable. * pinentry/pinentry.h (struct pinentry): Rename ttytype to ttytype_l.
This fixes the build with ncurses 6.2 which defines ttytpe
as a preprocessor variable.
To avoid problems with that we don't use that name as a
variable anymore.
- GnuPG-Bug-Id: T4927