[Sema] TypeWrappers: Availability of init(storageWrapper:) should match that of $Storage

Author: xedin

lib/Sema/CodeSynthesis.cpp

@@ -362,7 +362,7 @@ static ConstructorDecl *createImplicitConstructor(NominalTypeDecl *decl,
       params.push_back(arg);
     }
   } else if (ICK == ImplicitConstructorKind::TypeWrapperStorage) {
-    accessLevel = AccessLevel::Public;
+    accessLevel = decl->getTypeWrapperStorageDecl()->getFormalAccess();
 
     auto typeWrapperInfo = decl->getTypeWrapper();
     assert(typeWrapperInfo);

test/ModuleInterface/type_wrappers.swift

@@ -32,7 +32,6 @@ public struct Wrapper<W, S> {
 
 // CHECK: @TypeWrappers.Wrapper public class Test<T> where T : Swift.StringProtocol {
 // CHECK:   public init(a: Swift.Int, b: [T])
-// CHECK:   public init(storageWrapper: TypeWrappers.Wrapper<TypeWrappers.Test<T>, TypeWrappers.Test<T>.$Storage>)
 // CHECK: }
 
 @Wrapper