Fix false positive in Layout/DotPosition

[mvz]

This fixes a false positive in Layout/DotPosition where an offense would be registered for the trailing style when the receiver was a method call with multiline arguments, and the selector was on the same line as the receiver's closing bracket.

For example, before this change, the following offense would be registered:

foo(
  bar
).baz
 ^ Place the . on the previous line, together with the method call receiver.

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• Added tests.
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[Drenmi]

Nice!

[koic]

Thanks!

[natematykiewicz]

I was just about to report this. Thanks for the quick fix!