From fe0d9a9d212f5bc884b334b20c91fc12f4f11a9e Mon Sep 17 00:00:00 2001
From: janekptacijarabaci <janekptacijarabaci@seznam.cz>
Date: Wed, 27 Jun 2018 19:32:26 +0200
Subject: Fix "about:support"s "graphics" section when
 "webgl.disable-extensions" is true

---
 toolkit/modules/Troubleshoot.jsm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'toolkit')

diff --git a/toolkit/modules/Troubleshoot.jsm b/toolkit/modules/Troubleshoot.jsm
index 4c6ac558d..a862b1db4 100644
--- a/toolkit/modules/Troubleshoot.jsm
+++ b/toolkit/modules/Troubleshoot.jsm
@@ -460,7 +460,9 @@ var dataProviders = {
 
         // Eagerly free resources.
         let loseExt = gl.getExtension("WEBGL_lose_context");
-        loseExt.loseContext();
+        if (loseExt) {
+          loseExt.loseContext();
+        }
 
 
         return contextInfo;
-- 
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