url: fix bug in passwordmgr related to auth configuration
Usernames given as part of the URL would be ignored.
This bug was introduced in 89c80c3dc5842d609e9ba13f08fd2cf7f127c25a
hg: config error at .../t/.hg/hgrc:1: 'invalid'
updating working directory
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
[paths]
default = .../foo%bar
default = .../foo%bar
bundle.mainreporoot=.../foobar
defaults.backout=-d "0 0"
defaults.commit=-d "0 0"
defaults.debugrawcommit=-d "0 0"
defaults.tag=-d "0 0"
paths.default=.../foo%bar
ui.slash=True