misleading error report message

[Changqing Li]

Hi, Dear maintainers

I found a misleading error report message this line, refer [1],  It may report error like:

"...: /home/user1/.terminfo: permission denied (errno 122)",  while 122 means "disk full".

maybe it is better not hardcode the error string,  but use something like strerror(errno).

[1] https://github.com/mirror/ncurses/blob/master/ncurses/tinfo/write_entry.c#L235

Regards

Changqing