From 241a32bfe067ec4523008d4eed2a2d9fc29c100f Mon Sep 17 00:00:00 2001
From: cjp <cjp@7f0cb862-5218-0410-a997-914c9d46530a>
Date: Tue, 2 Sep 2003 17:43:43 +0000
Subject: [PATCH] Fix to stop fgSetWindow(NULL) crashing on X11.

git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@175 7f0cb862-5218-0410-a997-914c9d46530a
---
 freeglut/freeglut/src/freeglut_window.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/freeglut/freeglut/src/freeglut_window.c b/freeglut/freeglut/src/freeglut_window.c
index 21b3006..eda79f2 100644
--- a/freeglut/freeglut/src/freeglut_window.c
+++ b/freeglut/freeglut/src/freeglut_window.c
@@ -306,6 +306,8 @@ GLboolean fgSetupPixelFormat( SFG_Window* window, GLboolean checkOnly, unsigned
 void fgSetWindow ( SFG_Window *window )
 {
 #if TARGET_HOST_UNIX_X11
+  if ( window )
+  {
     /*
 	 * Make the selected window's GLX context the current one
      */
@@ -314,7 +316,7 @@ void fgSetWindow ( SFG_Window *window )
         window->Window.Handle,
         window->Window.Context
     );
-
+  }
 #elif TARGET_HOST_WIN32
 	/*
 	 * Release the previous' context's device context