nim-registry is not GC safe so cannot be used in spawn

[genotrance]

I'm trying to run a proc in parallel using spawn but it doesn't compile since winregistry is using a global variable:-

winregistry.nim(356, 6) Warning: 'queryMaxKeyLength' is not GC-safe as it accesses 'nullWinString' which is a global using GC'ed memory [GcUnsafe2]

This can be fixed by letting each proc have its own copy of nullWinString. There seem to be multiple instances of this:-

queryMaxKeyLength() countValues() countSubkeys()

[miere43]

Works now?

[genotrance]

Yep works great, thanks!