Check for a space between the last line and description.

    like such
    # Description
    #
    # Last Line

def _space_before_copyright(relative_path, contents, linter_options):
    """Check for a space between the last line and description.

    like such
    # Description
    #
    # Last Line
    """
    del relative_path
    del linter_options

    last_line = _find_last_line_index(contents)
    if not _match_space_at_line(contents[last_line - 1]):
        comment = _comment_type_from_line(contents[last_line])[:-1]
        description = """The second last line must be an empty comment"""
        return LinterFailure(description, last_line + 1,
                             comment + "\n" + contents[last_line])