pkg/53212: time/xfce4-orage fails to build after update to time/libical to 3.0.3

[davshao%gmail.com@localhost]

>Number:         53212
>Category:       pkg
>Synopsis:       time/xfce4-orage fails to build after update to time/libical to 3.0.3
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 25 14:25:00 +0000 2018
>Originator:     David Shao
>Release:        current pkgsrc
>Organization:
>Environment:
NetBSD xxxxxx.xxx 8.99.14 NetBSD 8.99.14 (GENERIC) #11: Tue Apr 24 23:37:54 PDT 2018  xxxxxx%xxxxxx.xxx@localhost:/usr/obj/sys/arch/amd64/compile/GENERIC amd64

>Description:
After the update to time/libical 3.0.3, time/xfce4-orage fails to build with:

ical-code.c: In function 'count_first_alarm_time':
ical-code.c:2582:22: error: 'struct icaltimetype' has no member named 'is_utc'; did you mean 'is_date'?
             per.stime.is_utc        = 1;
                      ^
ical-code.c:2591:22: error: 'struct icaltimetype' has no member named 'is_utc'; did you mean 'is_date'?
             per.etime.is_utc        = 1;
                      ^
ical-code.c: In function 'count_next_alarm_time':
ical-code.c:2616:19: error: 'struct icaltimetype' has no member named 'is_utc'; did you mean 'is_date'?
         start_time.is_utc        = 1;
                   ^
ical-code.c: In function 'process_alarm_trigger':
ical-code.c:2771:28: error: 'struct icaltimetype' has no member named 'is_utc'; did you mean 'is_date'?
             next_alarm_time.is_utc        = 0;
                            ^
ical-code.c:2853:32: error: 'struct icaltimetype' has no member named 'is_utc'; did you mean 'is_date'?
                 next_alarm_time.is_utc        = 0;
                                ^
ical-code.c:2947:32: error: 'struct icaltimetype' has no member named 'is_utc'; did you mean 'is_date'?
                 next_alarm_time.is_utc        = 0;
                                ^
Makefile:707: recipe for target 'orage-ical-code.o' failed

>How-To-Repeat:
/etc/mk.conf does have lines:

CURSES_DEFAULT=ncurses
READLINE_DEFAULT=readline

CFLAGS+= -g
INSTALL_UNSTRIPPED=yes
USE_DESTDIR=yes

ACCEPTABLE_LICENSES += vim-license lame-license vera-ttf-license 
ALLOW_VULNERABLE_PACKAGES=yes

PKG_OPTIONS.xfce4-thunar = -gvfs 
PKG_OPTIONS.ffmpeg = -x264
>Fix: