From 26dcfcbd4470eef31f61b6a617f3386947c4fad6 Mon Sep 17 00:00:00 2001
From: Simon Tatham <anakin@pobox.com>
Date: Sat, 12 Mar 2022 15:21:18 +0000
Subject: [PATCH] Make init_winver() idempotent.

This way, anyone who needs to use the version data can quickly call
init_winver to make sure it's been set up, and not waste too much faff
redoing the actual work.
---
 windows/utils/version.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/windows/utils/version.c b/windows/utils/version.c
index a53c2ad3..b626710e 100644
--- a/windows/utils/version.c
+++ b/windows/utils/version.c
@@ -4,6 +4,11 @@ DWORD osMajorVersion, osMinorVersion, osPlatformId;
 
 void init_winver(void)
 {
+    static bool initialised = false;
+    if (initialised)
+        return;
+    initialised = true;
+
     OSVERSIONINFO osVersion;
     static HMODULE kernel32_module;
     DECL_WINDOWS_FUNCTION(static, BOOL, GetVersionExA, (LPOSVERSIONINFO));