if (mLoadGroup) { mLoadGroup->RemoveRequest(this, ctxt, mStatus); }
NS_IMETHODIMP nsMailtoChannel::AsyncOpen(nsIStreamListener *listener, nsISupports *ctxt){  mStatus = listener->OnStartRequest(this, ctxt);  // If OnStartRequest(...) failed, then propagate the error code...  if (NS_SUCCEEDED(mStatus)) {    // Otherwise, indicate that no content is available...    mStatus = NS_ERROR_NO_CONTENT;  }  // Call OnStopRequest(...) for correct-ness.  (void) listener->OnStopRequest(this, ctxt, mStatus);  // Always return NS_ERROR_NO_CONTENT since this channel never provides  // data...  return NS_ERROR_NO_CONTENT;}