add patch file

depends/patches/zeromq/0001-fix-build-with-older-mingw64.patch

@@ -0,0 +1,29 @@
+From 1a159c128c69a42d90819375c06a39994f3fbfc1 Mon Sep 17 00:00:00 2001
+From: Cory Fields <cory-nospam-@coryfields.com>
+Date: Tue, 28 Nov 2017 20:33:25 -0500
+Subject: [PATCH] fix build with older mingw64
+
+---
+ src/windows.hpp | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/src/windows.hpp b/src/windows.hpp
+index 99e889d..e69038e 100644
+--- a/src/windows.hpp
++++ b/src/windows.hpp
+@@ -55,6 +55,13 @@
+ #include <winsock2.h>
+ #include <windows.h>
+ #include <mswsock.h>
++
++#if defined __MINGW64_VERSION_MAJOR && __MINGW64_VERSION_MAJOR < 4
++// Workaround for mingw-w64 < v4.0 which did not include ws2ipdef.h in iphlpapi.h.
++// Fixed in mingw-w64 by 9bd8fe9148924840d315b4c915dd099955ea89d1.
++#include <ws2def.h>
++#include <ws2ipdef.h>
++#endif
+ #include <iphlpapi.h>
+
+ #if !defined __MINGW32__
+--
+2.7.4