Create the auto-gc thread after initializing the variables it uses.
Create the auto-gc thread after initializing the variables it uses.

Creating it before could race with initialization, leading to it
reading unbound variables.

varjagg/Mezzano,rvedam/Mezzano,froggey/Mezzano,varjagg/Mezzano,froggey/Mezzano,rvedam/Mezzano