py3: fix for Python 3.12 emitting SyntaxWarning on invalid escape sequences
Missed in 805d4a462abb:
$ python3.12 mercurial/store.py
mercurial/store.py:406: SyntaxWarning: invalid escape sequence '\.'
EXCLUDED = re.compile(b'.*undo\.[^/]+\.(nd?|i)$')
--- a/mercurial/store.py Tue Mar 21 15:27:03 2023 +0100
+++ b/mercurial/store.py Tue Mar 21 17:07:22 2023 +0100
@@ -403,7 +403,7 @@
# some exception to the above matching
#
# XXX This is currently not in use because of issue6542
-EXCLUDED = re.compile(b'.*undo\.[^/]+\.(nd?|i)$')
+EXCLUDED = re.compile(br'.*undo\.[^/]+\.(nd?|i)$')
def is_revlog(f, kind, st):