py3: fix test-setdiscovery.t on Python 3 by conditionalizing two lines
I'm not clear why this behaves very slightly differently on Python 3,
but I'm also not concerned about it.
Differential Revision: https://phab.mercurial-scm.org/D6658
# See http://EditorConfig.org for the specification
root = true
[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true
[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true
[*.t]
indent_size = 2
indent_style = space
trim_trailing_whitespace = false