EventLog: Check for exception after add()

When reading events, calling Collection.add() may result in an
OutOfMemoryError or immutability error. Check for an exception
after the call in EventLog and SecurityLog.

Bug: 67511924
Test: m
Test: Device boots
Change-Id: If0fbf6b01051b5311eeb88d3f52470cd8b1eec59
2 files changed