Fix single-line comment indentation after multi-token values in expression

[jgardn3r]

After expressions, single-line comments are formatted incorrectly.

Expected:

A :=
    B.C
        //
        + D;

Actual

A :=
    B.C
            //
        + D;

This issue must be related to the fact B.C is not a single token because the following is formatted correctly.

A :=
    B
        //
        + D;