Fix throws an error if "winUtils.supportsHardwareH264Decoding" not available

After "Restart normally" - throws an error:
Troubleshoot data provider failed: graphics
[Exception... "Component returned failure code: 0x8000ffff (NS_ERROR_UNEXPECTED) [nsIDOMWindowUtils.supportsHardwareH264Decoding]"  nsresult: "0x8000ffff (NS_ERROR_UNEXPECTED)"  location: "JS frame :: resource://gre/modules/Troubleshoot.jsm :: graphics :: line 348"  data: no]  Troubleshoot.jsm:155
TypeError: invalid 'in' operand data  aboutSupport.js:204:1

1 files changed, 8 insertions, 5 deletions

diff --git a/toolkit/modules/Troubleshoot.jsm b/toolkit/modules/Troubleshoot.jsm
index 20aad6770..4c6ac558d 100644
--- a/toolkit/modules/Troubleshoot.jsm
+++ b/toolkit/modules/Troubleshoot.jsm
@@ -347,11 +347,14 @@ var dataProviders = {
                    QueryInterface(Ci.nsIInterfaceRequestor).
                    getInterface(Ci.nsIDOMWindowUtils)
     data.supportsHardwareH264 = "Unknown";
-    let promise = winUtils.supportsHardwareH264Decoding;
-    promise.then(function(v) {
-      data.supportsHardwareH264 = v;
-    });
-    promises.push(promise);
+    try {
+      // After restart - data may not be available
+      let promise = winUtils.supportsHardwareH264Decoding;
+      promise.then(function(v) {
+        data.supportsHardwareH264 = v;
+      });
+      promises.push(promise);
+    } catch (e) {}
 
     data.currentAudioBackend = winUtils.currentAudioBackend;