From d5d61a5e053205c9c6bdfbd1401ff7bfced88540 Mon Sep 17 00:00:00 2001
From: Travis Howell <kirben@scummvm.org>
Date: Tue, 17 Jun 2003 16:06:17 +0000
Subject: [PATCH] Missed one

svn-id: r8536
---
 backends/sdl/sdl_gl.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/backends/sdl/sdl_gl.cpp b/backends/sdl/sdl_gl.cpp
index e831d1d3380..ead5e92e8e7 100644
--- a/backends/sdl/sdl_gl.cpp
+++ b/backends/sdl/sdl_gl.cpp
@@ -294,6 +294,8 @@ void OSystem_SDL_OpenGL::hotswap_gfx_mode() {
 	if (!_screen)
 		return;
 
+	StackLock lock(_mutex); // Lock the mutex until this function ends
+
 	// Keep around the old _screen & _tmpscreen so we can restore the screen data
 	// after the mode switch.
 	SDL_Surface *old_screen = _screen;