[Unbound] Update to 1.5.8

Bump unbound to version 1.5.8 released on March 2, 2016.

Signed-off-by: Michael Hanselmann <public@hansmi.ch>

net/unbound/Makefile

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2010-2015 OpenWrt.org
+# Copyright (C) 2010-2016 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=unbound
-PKG_VERSION:=1.5.7
+PKG_VERSION:=1.5.8
 PKG_RELEASE:=1
 
 PKG_LICENSE:=BSD-3-Clause
@@ -17,7 +17,7 @@ PKG_MAINTAINER:=Michael Hanselmann <public@hansmi.ch>
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://www.unbound.net/downloads
-PKG_MD5SUM:=a1253cbbb339dbca03404dcc58365d71
+PKG_MD5SUM:=1c34282bae0c625b86374ee9caaef6f7
 
 PKG_BUILD_DEPENDS:=libexpat
 PKG_BUILD_PARALLEL:=1