openvpn: update to 2.7.4

Update the OpenVPN package to 2.7.4

For changes, see:
https://github.com/OpenVPN/openvpn/blob/v2.7.4/Changes.rst

Signed-off-by: Sander van Deijck <sander@vandeijck.com>
(cherry picked from commit f706d6410d)
Signed-off-by: Sander van Deijck <sander@vandeijck.com>

net/openvpn/Makefile

@@ -9,14 +9,14 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=openvpn
 
-PKG_VERSION:=2.7.1
+PKG_VERSION:=2.7.4
 PKG_RELEASE:=1
 
 PKG_SOURCE_URL:=\
 	https://build.openvpn.net/downloads/releases/ \
 	https://swupdate.openvpn.net/community/releases/
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_HASH:=9858477ec2894a8a672974d8650dcb1af2eeffb468981a2b619f0fa387081167
+PKG_HASH:=18db05f3d5eee3663db1914590044e5f96ff5cd47b6e7846c6a350806c23dbce
 
 PKG_MAINTAINER:=
 

net/openvpn/patches/100-mbedtls-disable-runtime-version-check.patch

@@ -1,6 +1,6 @@
 --- a/src/openvpn/ssl_mbedtls.c
 +++ b/src/openvpn/ssl_mbedtls.c
-@@ -1573,11 +1573,7 @@ show_available_curves(void)
+@@ -1579,11 +1579,7 @@ show_available_curves(void)
  const char *
  get_ssl_library_version(void)
  {