From cd4aa2d9a9cffc5e600bbccc152397c8d5f744cc Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <icculus@icculus.org>
Date: Fri, 2 Jun 2017 01:32:33 -0400
Subject: [PATCH] Don't fail if the game process went away before we were ready
 to wait for it.

---
 code/autoupdater/autoupdater.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/code/autoupdater/autoupdater.c b/code/autoupdater/autoupdater.c
index 3a2d17b0..7c0cebaa 100644
--- a/code/autoupdater/autoupdater.c
+++ b/code/autoupdater/autoupdater.c
@@ -189,7 +189,12 @@ static void windowsWaitForProcessToDie(const DWORD pid)
     infof("Waiting on process ID #%u", (unsigned int) pid);
     h = OpenProcess(SYNCHRONIZE, FALSE, pid);
     if (!h) {
-// !!! FIXME: what does this return if process is already dead?  
+        const DWORD err = GetLastError();
+        if (err == ERROR_INVALID_PARAMETER) {
+            info("No such process; probably already dead. Carry on.");
+            return;  /* process is (probably) already gone. */
+        }
+        infof("OpenProcess failed. err=%d", (unsigned int) err);
         die("OpenProcess failed");
     }
     if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) {