multimedia/pipewire: softer dependency on ncurses after 3af7fd9 (+)

Let framework to decide which ncurses to use on recent -RURRENT
if it still polluted with installed devel/ncurses as dependency
for other unadjusted ports.

This is artificial case but can be faced on machines which not rebuild
from scratch (or in a clean environment) after base system upgrades.

No PORTREVISION bump, clean env build (poudriere f.e.) is not affected.

Reported by:	rhurling
Sponsored by:	Netzkommune GmbH

multimedia/pipewire/Makefile

@@ -69,7 +69,7 @@ MESON_ARGS=	-D pw-cat=enabled \
 .include <bsd.port.options.mk>
 
 .if ${OPSYS} == "FreeBSD" && ${OSVERSION} >= 1400035
-USES+=		ncurses:base
+USES+=		ncurses
 .else
 USES+=		ncurses:port
 .endif