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]
--- a/mercurial/encoding.py Sat Nov 16 15:43:21 2019 +0900
+++ b/mercurial/encoding.py Sat Nov 16 15:10:41 2019 +0900
@@ -35,7 +35,7 @@
for t in (Any, Callable, List, Text, Type, Union):
assert t
- _Tlocalstr = TypeVar('_Tlocalstr', bound=localstr)
+ _Tlocalstr = TypeVar('_Tlocalstr', bound='localstr')
charencode = policy.importmod('charencode')