Merge pull request swiftlang#36637 from drodriguez/windows-unsupport-more-concurrency-tests-in-vs2017

Author: swift-ci

test/Concurrency/Runtime/async_task_detached.swift

@@ -3,6 +3,9 @@
 // REQUIRES: executable_test
 // REQUIRES: concurrency
 
+// See SR-14333
+// UNSUPPORTED: MSVC_VER=15.0
+
 class X {
   init() {
     print("X: init")

test/IRGen/async/throwing.swift

@@ -6,7 +6,10 @@
 // REQUIRES: executable_test
 // REQUIRES: concurrency
 // UNSUPPORTED: use_os_stdlib
+
+// See SR-14333
 // XFAIL: OS=windows-msvc
+// UNSUPPORTED: MSVC_VER=15.0
 
 struct E : Error {}