--- a/b2g/config/gaia.json
+++ b/b2g/config/gaia.json
@@ -1,4 +1,4 @@
 {
-    "revision": "4a8dcbcad9433e7cb0b619d80b041219e5946130", 
+    "revision": "8c2ad9ad3192687c13efe1eb0cd986d6214b4b5d", 
     "repo_path": "/integration/gaia-central"
 }

--- a/dom/bindings/Exceptions.cpp
+++ b/dom/bindings/Exceptions.cpp
@@ -109,17 +109,26 @@ Throw(JSContext* aCx, nsresult aRv, cons
   }
 
   CycleCollectedJSRuntime* runtime = CycleCollectedJSRuntime::Get();
   nsCOMPtr<nsIException> existingException = runtime->GetPendingException();
   if (existingException) {
     nsresult nr;
     if (NS_SUCCEEDED(existingException->GetResult(&nr)) && 
         aRv == nr) {
-      // Just reuse the existing exception.
+      // Reuse the existing exception.
+
+      // Clear pending exception
+      runtime->SetPendingException(nullptr);
+
+      if (!ThrowExceptionObject(aCx, existingException)) {
+        // If we weren't able to throw an exception we're
+        // most likely out of memory
+        JS_ReportOutOfMemory(aCx);
+      }
       return false;
     }
   }
 
   nsRefPtr<Exception> finalException;
 
   // Do we use DOM exceptions for this error code?
   switch (NS_ERROR_GET_MODULE(aRv)) {