libs/libpng: Update to 1.6.34

Update libpng to 1.6.34

Signed-off-by: Daniel Engberg <daniel.engberg.lists@pyret.net>

libs/libpng/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libpng
-PKG_VERSION:=1.6.32
+PKG_VERSION:=1.6.34
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@SF/libpng
-PKG_HASH:=c918c3113de74a692f0a1526ce881dc26067763eb3915c57ef3a0f7b6886f59b
+PKG_HASH:=2f1e960d92ce3b3abd03d06dfec9637dfbd22febf107a536b44f7a47c60659f6
 PKG_MAINTAINER:=Jo-Philipp Wich <jo@mein.io>
 
 PKG_LICENSE:=Libpng GPL-2.0+ BSD-3-Clause