`endCall` callback not called when cancelling call with side lock button

[rcidt]

If you start a call via the startCall method, and then press on the lock button on the side of the phone, the call UI will say that the call has ended but the endCall callback is never called.

[rcidt]

This is a non-issue. This was happening because I was running this in debug mode. Sometimes when you lock the phone the JS will error out.