Fix some minor errors with the voice engine caused by the refactor CL https://codereview.webrtc.org/1229283003/.
Fix some minor errors with the voice engine caused by the refactor CL https://codereview.webrtc.org/1229283003/.

R=deadbeef@webrtc.org, solenberg@webrtc.org

Review URL: https://codereview.webrtc.org/1284693003 .

Cr-Original-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#9750}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: bfab5cbc33f21eccdd8e320ca44201ad6711f542

sippet/talk,sippet/talk,dcpang/fatline-libjingle,dcpang/fatline-libjingle,dcpang/fatline-libjingle,dcpang/fatline-libjingle,dcpang/fatline-libjingle,sippet/talk,sippet/talk,sippet/talk