bug 1228400 - null check tabChild before notifying the parent process about new child documents r=davidb

2015-12-14 11:00:48 -05:00
parent 5b1841c733
commit b920ced78f
1 changed files with 4 additions and 2 deletions
--- a/accessible/base/NotificationController.cpp
+++ b/accessible/base/NotificationController.cpp
@@ -389,8 +389,10 @@ NotificationController::WillRefresh(mozilla::TimeStamp aTime)
      childDoc->SetIPCDoc(ipcDoc);
      nsCOMPtr<nsITabChild> tabChild =
        do_GetInterface(mDocument->DocumentNode()->GetDocShell());
-      static_cast<TabChild*>(tabChild.get())->
-        SendPDocAccessibleConstructor(ipcDoc, parentIPCDoc, id);
+      if (tabChild) {
+        static_cast<TabChild*>(tabChild.get())->
+          SendPDocAccessibleConstructor(ipcDoc, parentIPCDoc, id);
+      }
    }
  }