`v fmt` parsing of comments in multi-line expressions incorrectly errors

[edam]

Describe the bug

If an expression spans more than one line and contains an in-line comment, v fmt and v vet report a syntax error.

Expected Behavior

The syntax should not cause an error.

Current Behavior

The syntax is incorrectly flagged as invalid.

Reproduction Steps

Run v fmt on the following:

fn main() {
    a := 4 // comment
        + 6
}

Result:

error: invalid expression: unexpected token `+`
    1 | fn main() {
    2 |     a := 4 // comment
    3 |         + 6
      |         ^
    4 | }

Possible Solution

No response

Additional Information/Context

No response

V version

V 0.3.3 2597efa

Environment details (OS name and version, etc.)

MacOS