Nimsuggest warning on `routes`: 'cb' is not GC-safe as it accesses 'nameIterVar' which is a global using GC'ed memory [GcUnsafe2] jester.routes: proc (body: stmt): stmt{.noSideEffect, gcsafe, locks: <unknown>.}
Nimsuggest shows this warning on `routes` invocation:
```
'cb' is not GC-safe as it accesses 'nameIterVar' which is a global using GC'ed memory [GcUnsafe2]
jester.routes: proc (body: stmt): stmt{.noSideEffect, gcsafe, locks: <unknown>.}
```
The program does compile, it's just annoying.
