httppeer: avoid another bad reference before assignment warning
This wasn't a problem, because `b''` from the `AttributeError` handler is in
`bundle2.bundletypes`, so the following loop and conditional always run at least
once. But PyCharm can't figure that out on its own, and it took a little
exploring to figure out it wasn't a problem. The usage in `bundle2.writebundle`
is to look it up in the map of bundle types, so it will break in a more obvious
way in the unlikely event that the empty string is removed from the map in the
future.
--- a/mercurial/httppeer.py Fri Jul 26 21:59:34 2024 -0400
+++ b/mercurial/httppeer.py Mon Jul 29 12:10:08 2024 -0400
@@ -492,6 +492,9 @@
# boolean capability. They only support headerless/uncompressed
# bundles.
types = [b""]
+
+ type = b""
+
for x in types:
if x in bundle2.bundletypes:
type = x