tree a3ba256e6c448594f958f70bb0e2333a65d58f97
parent d3da8fe2d0758798b48ff11cbe5c295d38dadacd
author James Tucker <raggi@google.com> 1544654533 -0800
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1544668116 +0000

[amber] cleanup mutex handling in initSource()

The auto-watch is no longer started inside this method, so the unlock can be
simplified. The error return change is also per golint advice.

Test: CQ
Change-Id: I45027043801b5f8ac792b6c3a9726f60698666ff