simplify

src/Features/Core/Portable/ConvertTupleToStruct/AbstractConvertTupleToStructCodeRefactoringProvider.cs

@@ -80,7 +80,7 @@ public override async Task ComputeRefactoringsAsync(CodeRefactoringContext conte
                       .Distinct()
                       .ToImmutableArray();
 
-            var scopes = ArrayBuilder<CodeAction>.GetInstance();
+            using var _ = ArrayBuilder<CodeAction>.GetInstance(out var scopes);
             scopes.Add(CreateAction(context, Scope.ContainingMember));
 
             // If we captured any Method type-parameters, we can only replace the tuple types we
@@ -90,9 +90,7 @@ public override async Task ComputeRefactoringsAsync(CodeRefactoringContext conte
             {
                 var containingType = tupleExprOrTypeNode.GetAncestor<TTypeBlockSyntax>();
                 if (containingType != null)
-                {
                     scopes.Add(CreateAction(context, Scope.ContainingType));
-                }
 
                 // If we captured any Type type-parameters, we can only replace the tuple
                 // types we find in the containing type.  No other tuple types in other
@@ -116,7 +114,7 @@ public override async Task ComputeRefactoringsAsync(CodeRefactoringContext conte
             context.RegisterRefactoring(
                 new CodeAction.CodeActionWithNestedActions(
                     FeaturesResources.Convert_to_struct,
-                    scopes.ToImmutableAndFree(),
+                    scopes.ToImmutable(),
                     isInlinable: false),
                 tupleExprOrTypeNode.Span);
         }