destruct gets mangled during parsing/rewrite

[nomisRev]

A Kotlin destructuring statement gets rewritten incorrectly. See #57 with failing test.

fun example() {
  val (a, b, c) = Triple(1, 2, 3)
}

gets rewritten to

fun example() {
  val <destruct>abc(a, b, c) = Triple(1, 2, 3)
}