Ruibiao Qiu.
1. delete the incorrect duplicate macro from unctrl.h 2. move unctrl macros from curses.h to unctrl.h and make curses.h include unctrl.h in curses.h instead of duplicating their definition. 3. constify unctrl arrays; make length unsigned.
Patches provided by Joel Baker in PR 22280, verified by myself.
Install it, as it's part of the curses interface.