Description

CacheLFUImmutable functions that accessed guilds were incorrectly deferring a call to mutex.Lock() causing the goroutine to block indefinitely.

Type of change

[x] I ran go generate
[x] I have performed a self-review of my own code (remember to run go fmt ./...)
[x] I have commented my code, particularly in hard-to-understand areas
[x] I have made corresponding changes to the documentation
[x] I have added tests that prove my fix is effective or that my feature works
[x] New and existing unit tests pass locally with my changes