Merge pull request #41635 from kavon/testcoverage-82452688

add coverage for <<error-type>> + Sendable diagnostic issue

Author: swift-ci

test/Concurrency/sendable_checking.swift

@@ -73,3 +73,13 @@ public actor MyActor: MyProto {
   public func foo<F>(aFoo: F) async where F: Sendable { }
   public func bar<B>(aBar: B) async where B: Sendable { }
 }
+
+// rdar://82452688 - make sure sendable checking doesn't fire for a capture
+// of a value of error-type
+@available(SwiftStdlib 5.1, *)
+func f() async {
+  let n = wobble() // expected-error{{cannot find 'wobble' in scope}}
+  @Sendable func nested() {
+    n.pointee += 1
+  }
+}