Bug #36371 --> clear refresh timers when loading new documents into the

docshell. This fixes the problem where after visiting a page with a refresh,
we would later always try to refresh that page even if you had moved on.

docshell/base/nsDocShell.cpp

@@ -2278,6 +2278,8 @@ NS_IMETHODIMP nsDocShell::InternalLoad(nsIURI* aURI, nsIURI* aReferrer,
       }
    
    NS_ENSURE_SUCCESS(StopCurrentLoads(), NS_ERROR_FAILURE);
+   // Cancel any timers that were set for this loader.
+   CancelRefreshURITimers();
 
    mLoadType = aLoadType;