Change order of tear down/create of default audio stream, to avoid starting/stopping audio card playout unnecessarily.
Change order of tear down/create of default audio stream, to avoid starting/stopping audio card playout unnecessarily.

BUG=b/34746131

Review-Url: https://codereview.webrtc.org/2670183005
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#16456}

ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc