simplify

src/Features/Core/Portable/MoveToNamespace/AbstractMoveToNamespaceCodeAction.cs

@@ -59,7 +59,7 @@ private static ImmutableArray<CodeActionOperation> CreateRenameOperations(MoveTo
         {
             Debug.Assert(moveToNamespaceResult.Succeeded);
 
-            var operations = PooledObjects.ArrayBuilder<CodeActionOperation>.GetInstance();
+            using var = PooledObjects.ArrayBuilder<CodeActionOperation>.GetInstance(out var operations);
             operations.Add(new ApplyChangesOperation(moveToNamespaceResult.UpdatedSolution));
 
             var symbolRenameCodeActionOperationFactory = moveToNamespaceResult.UpdatedSolution.Workspace.Services.GetService<ISymbolRenamedCodeActionOperationFactoryWorkspaceService>();
@@ -80,7 +80,7 @@ private static ImmutableArray<CodeActionOperation> CreateRenameOperations(MoveTo
                 }
             }
 
-            return operations.ToImmutableAndFree();
+            return operations.ToImmutable();
         }
 
         public static AbstractMoveToNamespaceCodeAction Generate(IMoveToNamespaceService changeNamespaceService, MoveToNamespaceAnalysisResult analysisResult)