Bug 1119746: Fix ref-counting of bluetoothd channels, r=btian

The class |BluetoothDaemonChannel| for the bluetoothd channels
supports reference counting. This patch fixes the respective
variable to use |nsRefPtr| instead of |nsAutoPtr|.

dom/bluetooth/bluedroid/BluetoothDaemonInterface.h

@@ -131,8 +131,8 @@ protected:
 private:
   void DispatchError(BluetoothResultHandler* aRes, BluetoothStatus aStatus);
 
-  nsAutoPtr<BluetoothDaemonChannel> mCmdChannel;
-  nsAutoPtr<BluetoothDaemonChannel> mNtfChannel;
+  nsRefPtr<BluetoothDaemonChannel> mCmdChannel;
+  nsRefPtr<BluetoothDaemonChannel> mNtfChannel;
   nsAutoPtr<BluetoothDaemonProtocol> mProtocol;
 
   nsTArray<nsRefPtr<BluetoothResultHandler> > mResultHandlerQ;