fix events under tsan

The test had an actual bug (go figure...), and it turns out events need
the same fix as mutexes to help tsan figure out what's going on

Change-Id: I711850b635616b0df4df7be788ddebb71c88fc5e
2 files changed
tree: e0886c09f78dbe646c76ba79cab3c36c45b2d068
  1. aos/
  2. doc/
  3. frc971/
  4. output/
  5. vision/
  6. .clang-format
  7. .gitignore
  8. README.txt