From 1cb735a63a993a70b190812fbf6d7bf3fe51dd2a Mon Sep 17 00:00:00 2001
From: Christian Holler <choller@mozilla.com>
Date: Thu, 20 Jan 2022 13:27:47 +0000
Subject: [PATCH] Bug 1750181 - Silence warning about unused diagnostic
 variable. r=gsvelto

Differential Revision: https://phabricator.services.mozilla.com/D136476
---
 widget/windows/nsAppShell.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/widget/windows/nsAppShell.cpp b/widget/windows/nsAppShell.cpp
index c5fbebffa630..15d0d149c48e 100644
--- a/widget/windows/nsAppShell.cpp
+++ b/widget/windows/nsAppShell.cpp
@@ -534,7 +534,7 @@ nsresult nsAppShell::Init() {
       wc.hbrBackground = (HBRUSH) nullptr;
       wc.lpszMenuName = (LPCWSTR) nullptr;
       wc.lpszClassName = kWindowClass;
-      ATOM wcA = RegisterClassW(&wc);
+      [[maybe_unused]] ATOM wcA = RegisterClassW(&wc);
       MOZ_DIAGNOSTIC_ASSERT(wcA, "RegisterClassW for EventWindowClass failed");
     }