typing: fix forward reference in _Tlocalstr type bound...
typing: fix forward reference in _Tlocalstr type bound
AFAIK, a quoted string in type position is translated to its ForwardRef.
https://github.com/python/typing/issues/34
This fixes the following error:
File "mercurial/encoding.py", line 38, in <module>: Name 'localstr' is not
defined [name-error]