message: [Swift] Add a test for the Optional formatter for classes.
diff: @@ -21,5 +21,18 @@ let y : Optional<Test> = Test(a: 1, b: Patatino.first)
  // CHECK-NEXT: b = first
  // CHECK-NEXT: }
  +class A {
  + var x : Int
  + init(_ x : Int) {
  + self.x = x
  + }
  +}
  +
  +var q : A? = A(23)
  +
  +// CHECK-NEXT: {{q}}: A? = 0x{{.*}} {
  +// CHECK-NEXT: x = 23
  +// CHECK-NEXT: }
  +
  let tinky : UInt8? = 250
  // CHECK-NEXT: {{tinky}}: UInt8? = 250
  