dnsmasq: bump to 2.81rc4

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>

package/network/services/dnsmasq/Makefile

@@ -8,13 +8,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=dnsmasq
-PKG_UPSTREAM_VERSION:=2.81rc3
+PKG_UPSTREAM_VERSION:=2.81rc4
 PKG_VERSION:=$(subst test,~~test,$(subst rc,~rc,$(PKG_UPSTREAM_VERSION)))
 PKG_RELEASE:=3
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_UPSTREAM_VERSION).tar.xz
 PKG_SOURCE_URL:=http://thekelleys.org.uk/dnsmasq/release-candidates
-PKG_HASH:=c516904cec0ecb45b02ae7c192a4f08a59f734c7a332c15b26b44ffa3ae2925e
+PKG_HASH:=0c4770eb05a0dfe5900d54b115f0f085f08b403fef6e96a8000fbcecc7c6edfa
 
 PKG_LICENSE:=GPL-2.0
 PKG_LICENSE_FILES:=COPYING