VideoCaptureAndroid: stop preview in opposite order of starting.

While the SDK documentation doesn't prescribe a required shutdown order, good
hygiene suggests stopping should happen in reverse order of starting.  It also
seems to relieve a crash in the system capturer on at least the Galaxy Note 10.

BUG=2793
R=henrike@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/7549004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@5445 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed