Bug 541743 - Closing two tabs from yelp.com in rapid succession crashes Camino [@ nsCOMPtr_base::assign_from_qi(nsQueryInterface, nsID const&) | nsDocShell::FirePageHideNotification(int) ] [@ nsDocShell::FirePageHideNotification(int) ], so hold a strong ref to the docshell. r=bz

embedding/browser/webBrowser/nsWebBrowser.cpp

@@ -1600,6 +1600,7 @@ NS_IMETHODIMP nsWebBrowser::ScrollByPages(PRInt32 aNumPages)
 
 NS_IMETHODIMP nsWebBrowser::SetDocShell(nsIDocShell* aDocShell)
 {
+     nsCOMPtr<nsIDocShell> kungFuDeathGrip(mDocShell);
      if(aDocShell)
      {
          NS_ENSURE_TRUE(!mDocShell, NS_ERROR_FAILURE);