fix failing test

Author: benpious

test/Interpreter/keypath.swift

@@ -88,5 +88,5 @@ print(\S.a)
 print(\Controller[int: 0, str: "", 0])
 // CHECK: {{\\Controller\.thirdLabel|\\Controller\.<computed 0x.* \(Optional<MyLabel>\)>}}
 print(\Controller.thirdLabel)
-// CHECK: {{\\Controller\.subscript\(\)|\\Controller\.<computed 0x.* \(Optional<Int>\)>}}
+// CHECK: {{\\Controller\.subscript\(\)|\\Controller\.<computed 0x.* \(Int\)>}}
 print(\Controller.[])