tree b0b870c5c59e31075685603fe13b61fe65189ff4
parent 6ee3471968fe4c5ae449ded5795c38515cb54704
author Scott James Remnant <keybuk@google.com> 1654897620 -0700
committer CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com> 1655139911 +0000

pw_log: Mark LogEntry.message as optional

There is a functional and useful difference between a LogEntry having
no message, and an empty one, so use optional correctly to distinguish
those cases.

Change-Id: I8fe19dee374878a997ac0a8c76eb0b844575d9d3
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/97792
Reviewed-by: Keir Mierle <keir@google.com>
Commit-Queue: Scott James Remnant <keybuk@google.com>