dnsmasq: bump to v2.81

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:=2.81rc5
+PKG_UPSTREAM_VERSION:=2.81
 PKG_VERSION:=$(subst test,~~test,$(subst rc,~rc,$(PKG_UPSTREAM_VERSION)))
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_UPSTREAM_VERSION).tar.xz
-PKG_SOURCE_URL:=http://thekelleys.org.uk/dnsmasq/release-candidates
-PKG_HASH:=d95439b0f0b3d540fd4a10fc150efa7478e0d70db8168d76550562dadf9fc433
+PKG_SOURCE_URL:=http://thekelleys.org.uk/dnsmasq
+PKG_HASH:=749ca903537c5197c26444ac24b0dce242cf42595fdfe6b9a5b9e4c7ad32f8fb
 
 PKG_LICENSE:=GPL-2.0
 PKG_LICENSE_FILES:=COPYING