Allow whitespace after lpar followed by a comment

[romtsn]

Fix #653.

Technically, IDEA actually allows both

System.out.println( // 123
    "test single comment"
)

And

System.out.println(// 123
    "test single comment"
)

This PR is only targeting to fix the former case, whilst the latter will still be violated by the comment-spacing rule. I think it's a good tradeoff between readability and compatibility with idea. Let me know, if you think we should also change comment-spacing to allow both cases.

[Tapchicoma]

I think it is correct to support only first case. Thank you for fixing the bug in rule 👍