rust-python-index: don't panic on a corrupted index when calling from Python
This makes `test-verify.t` pass again. In an ideal world, we would find
the exact commit where this test breaks and amend part of this change there,
but this is a long enough series.
# 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