Fix initialization/termination of AudioDeviceTemplate

AudioDeviceTemplate doesn't initialize `output_` and `input_` if the
initialization of `audio_manager_` succeeds. Similarly, it doesn't
terminate `input_` and `audio_manager_` if the termination of `output_`
succeeds. This CL fixes this.

BUG=

Review URL: https://codereview.webrtc.org/1296693003

Cr-Commit-Position: refs/heads/master@{#9760}
1 file changed