multimedia/nymphcast: fix build on 12-

Needs an explicit <time.h> that gets pulled in implicitly
on newer FreeBSD releases (thanks to imp@ making the headers
less annoyingly-pedantic).

multimedia/nymphcast/Makefile

 PORTNAME=	NymphCast
 DISTVERSION=	v0.1-rc0
+PORTREVISION=	1
 CATEGORIES=	multimedia
 
 # -p3 because WRKSRC_SUBDIR is set; the patches are from the toplevel,

multimedia/nymphcast/files/patch-gui_core_utils_TimeUtil.h

+--- gui/core/utils/TimeUtil.h.orig	2022-02-16 14:27:26 UTC
++++ gui/core/utils/TimeUtil.h
+@@ -2,6 +2,8 @@
+ #ifndef ES_CORE_UTILS_TIME_UTIL_H
+ #define ES_CORE_UTILS_TIME_UTIL_H
+ 
++#include <ctime>
++
+ #include <string>
+ 
+ namespace Utils