tree c26b4c26ec698a6fd1148104cc3884a7eb7c1521
parent 4ed9d77720784debaa328c48353b284ff21248df
author Andrew Walbran <qwandor@google.com> 1689960118 +0100
committer Andrew Walbran <qwandor@google.com> 1689960237 +0100

Use OnceLock rather than Once.

This avoids the need for a mutable static, and most of the unsafety.

Bug: 290018030
Test: m rust
Change-Id: Ib9a1af0c74f1620db340ee4abdbfb5e6ad9752a7