dirstate-tree: simplify the control flow in the Node.insert method
But explicitly with the special case early, laying out the various case become
simpler.
(The initial motivation was to make some future lifetime error simpler).
Differential Revision: https://phab.mercurial-scm.org/D9203
# See http://EditorConfig.org for the specification
root = true
[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true
end_of_line = lf
[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true
end_of_line = lf
[*.t]
indent_size = 2
indent_style = space
trim_trailing_whitespace = false
end_of_line = lf