zerotier: bump to 1.6.4

Signed-off-by: Moritz Warning <moritzwarning@web.de>

net/zerotier/Makefile

@@ -6,12 +6,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=zerotier
-PKG_VERSION:=1.6.3
+PKG_VERSION:=1.6.4
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/zerotier/ZeroTierOne/tar.gz/$(PKG_VERSION)?
-PKG_HASH:=437d51a396e65f45822b0e5ee3761e3dfaf3507d9cc8f9b01e09c5541395d7b2
+PKG_HASH:=0f45a4050cdfea1018634c88b6c302cbbfcc3f7f93cb94bed840a15e3ffa55ba
 PKG_BUILD_DIR:=$(BUILD_DIR)/ZeroTierOne-$(PKG_VERSION)
 
 PKG_MAINTAINER:=Moritz Warning <moritzwarning@web.de>