Disable async-stream test in freestanding mode

ktoso · ktoso · commit 6883592e74e0 · 2023-03-10T18:50:54.000+09:00
diff --git a/test/Concurrency/Runtime/async_stream.swift b/test/Concurrency/Runtime/async_stream.swift
@@ -6,6 +6,7 @@
 
 // rdar://78109470
 // UNSUPPORTED: back_deployment_runtime
+// UNSUPPORTED: freestanding
 
 import _Concurrency
 import StdlibUnittest
