Ignores indent_style when indent_size is not set

[dirk-zimoch]

This is my .editorconfig file:

# Documentation for this file: https://EditorConfig.org

root = true

# Unix-style newlines ending every file,
# as some compilers complain about files not ending in newline
# Enforce consistent space indent style in source code
# and remove all trailing spaces
[*.{c,cc,cpp,h,hpp,pl,py,yml,rst}]
indent_style = space
insert_final_newline = true
trim_trailing_whitespace = true

While the JavaScript version of eclint warns about tab indented lines, this version does not unless I also set indent_size.
Tested with v0.5.0. and v0.5.1.