message: [Swift] Update tests to run map() inside a closure.
diff: @@ -8,9 +8,11 @@ func main() -> Int {
  //%self.expect('frame var $1', substrs=['foo'])
  )
  - var tinky = [1,2].map({$0 * 2})
  + var tinky = [1,2].map({
  + $0 * 2 //%self.expect('expr [12, 14].map({$0 + 2})', substrs=['[0] = 14', '[1] = 16'])
  + })
  - return 0 //%self.expect('expr tinky.map({$0 * 2})', substrs=['[0] = 2', '[1] = 4'])
  + return 0 //%self.expect('expr tinky.map({$0 * 2})', substrs=['[0] = 4', '[1] = 8'])
  //%self.expect('expr [2,4].map({$0 * 2})', substrs=['[0] = 4', '[1] = 8'])
  //%self.expect('expr $0', substrs=['unresolved identifier \'$0\''], error=True)
  }
  