byteify-strings: fix misalignment with multi-line parenthesis
This improves the current fix to also take into account cases where the last
line ended on the opening `(`, `[` or `{` and adds a regression test.
# 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