Fixed the diff error for the Deserializer Stub Code.

codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/protocol/aws/AwsJson10ProtocolGenerator.java

@@ -71,7 +71,7 @@ public void generateSharedSerializers(GenerationContext context, GoWriter writer
 
     @Override
     public void generateResponseDeserializers(GenerationContext context) {
-        GoWriter writer = context.getWriter().get();
+        var writer = context.getWriter().get();
         var model = context.getModel();
         var ops = model.getOperationShapes();
         for (var op : ops) {