1 files changed, 1 insertions, 3 deletions
diff --git a/src/coreclr/tools/Common/TypeSystem/Ecma/SymbolReader/PortablePdbSymbolReader.cs b/src/coreclr/tools/Common/TypeSystem/Ecma/SymbolReader/PortablePdbSymbolReader.cs
index 4baae1590cf..17cee6d38cc 100644
--- a/src/coreclr/tools/Common/TypeSystem/Ecma/SymbolReader/PortablePdbSymbolReader.cs
+++ b/src/coreclr/tools/Common/TypeSystem/Ecma/SymbolReader/PortablePdbSymbolReader.cs
@@ -1,7 +1,6 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
-using System;
 using System.Collections.Generic;
 using System.IO;
 using System.IO.MemoryMappedFiles;
@@ -105,8 +104,7 @@ namespace Internal.TypeSystem.Ecma
 
         public override void Dispose()
         {
-            if (_mappedViewAccessor != null)
-                _mappedViewAccessor.Dispose();
+            _mappedViewAccessor?.Dispose();
         }
 
         public override int GetStateMachineKickoffMethod(int methodToken)