waddnwstr fix for #161

[SkyperTHC]

Fix for #161. Normal ncurses is already checked further below but waddnwstr is part of ncursesw. Without this fix you get a double:
Makefile:

LIBS = -lncurses -lncurses 

where it should be:

LIBS = -lncursesw -lncurses 

tested on default Kali install:

PRETTY_NAME="Kali GNU/Linux Rolling" NAME="Kali GNU/Linux" VERSION_ID="2023.2" VERSION="2023.2" VERSION_CODENAME=kali-rolling ID=kali ID_LIKE=debian HOME_URL="https://www.kali.org/" SUPPORT_URL="https://forums.kali.org/" BUG_REPORT_URL="https://bugs.kali.org/" ANSI_COLOR="1;31"