zic: bump to 2018c

Signed-off-by: Adam Duskett <aduskett@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/zic/zic.hash

@@ -1,2 +1,2 @@
-# From http://mm.icann.org/pipermail/tz-announce/2017-October/000047.html
-sha512 0d8c3e07b0de9015a137602450468ceb6358312a50eeda2a860882367107b8ba9ef275880b292570a671b9910afc54e6209e1e642387d246bc9c08c4ff660ffb	tzcode2017c.tar.gz
+# From http://mm.icann.org/pipermail/tz-announce/2018-January/000048.html
+sha512 21988e876479e38661d41ea4c7b5218ba14b979739d7ba8d49a2d343bb9f37c654056ab21c046a6652715f012e4ca33c4aa109b1ec3ac5d0244dd3a7ea9ed6d2	tzcode2018c.tar.gz

package/zic/zic.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-ZIC_VERSION = 2017c
+ZIC_VERSION = 2018c
 ZIC_SOURCE = tzcode$(ZIC_VERSION).tar.gz
 ZIC_SITE = http://www.iana.org/time-zones/repository/releases
 ZIC_STRIP_COMPONENTS = 0