Fix locking in LoopBackTransport::StorePacket.

The critical section in StorePacket was unnamed and only existed in
expression scope. Added GUARDED_BY annotations (which caught the bug),
then fixed it by naming the variable.

BUG=2880
R=henrika@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/7979004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@5484 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed