tree a5865493c29cc0e067fb8ce43c88d34777e7ae55
parent cdf3e2905aa606a0f0ee56c1ede748371a930017
author Marissa Wall <marissaw@google.com> 1559160205 -0700
committer Marissa Wall <marissaw@google.com> 1559161818 -0700

transactions: fix mutex deadlock on layer death

We must drop the mMutex on the TransactionCompletedThread when
potentially dropping the last sp to a layer.

Bug: 133709028
Test: Transaction_tests
Change-Id: I8bbfbf16c755aee7d010a0992f7328f50d521c8b