safehasattr: pass attribute name as string instead of bytes
This is a step toward replacing `util.safehasattr` usage with plain `hasattr`.
The builtin function behave poorly in Python2 but this was fixed in Python3.
These change are done one by one as they tend to have a small odd to trigger
puzzling breackage.
--- a/mercurial/url.py Thu Feb 02 17:37:44 2023 +0100
+++ b/mercurial/url.py Thu Feb 02 17:38:04 2023 +0100
@@ -190,7 +190,7 @@
return _sendfile
-has_https = util.safehasattr(urlreq, b'httpshandler')
+has_https = util.safehasattr(urlreq, 'httpshandler')
class httpconnection(keepalive.HTTPConnection):