formatting: fix redundant parentheses
These were introduced by
0d055849d5f9d682ef931d2566b760d5c6bf7e52.
Differential Revision: https://phab.mercurial-scm.org/D10229
wsgicgi: switch the default PATH_INFO back to str
It looks like everything here is meant to be str, and regressed in
687b865b95ad.
Pytype didn't flag this, but is really confused about the range of possible
types for the dictionary values, and flagged missing `lower()` on various types
in this area.
Differential Revision: https://phab.mercurial-scm.org/D10204