Comment formatted away in uncurried mode

```rescript
let multiply = (type /* c-2 */ t /* c-1 */, /* c0 */ m1 /* c1 */, /* c2 */ m2 /* c3 */) => ()
```

(from `jscomp/syntax/tests/printer/comments/expr.res`) is reformatted to

```rescript
let multiply = (type /* c-2 */ t /* c-1 */, m1 /* c1 */, /* c2 */ m2 /* c3 */) => ()
```