Binder: Log details of pending exception.

This was accidentally removed by change d64abfcf93b59500a0d.

Test: manual; verify exception trace is printed in logs.
Bug: 36813403
Bug: 37435516
Change-Id: I73ae8de167c457d56fddb85943a8f08f8913f0f7
(cherry picked from commit ccc9fad9e6abfa3cf082567669cc5d03ec7a3086)
1 file changed