Stylecop cleanup DeflaterEngine

src/ImageSharp/Formats/Png/Zlib/DeflaterThrowHelper.cs → src/ImageSharp/Formats/Png/Zlib/DeflateThrowHelper.cs

@@ -6,7 +6,7 @@ using System.Runtime.CompilerServices;
 
 namespace SixLabors.ImageSharp.Formats.Png.Zlib
 {
-    internal static class DeflaterThrowHelper
+    internal static class DeflateThrowHelper
     {
         [MethodImpl(InliningOptions.ColdPath)]
         public static void ThrowAlreadyFinished() => throw new InvalidOperationException("Finish() already called.");

src/ImageSharp/Formats/Png/Zlib/Deflater.cs

@@ -181,7 +181,7 @@ namespace SixLabors.ImageSharp.Formats.Png.Zlib
         {
             if ((this.state & IsFinishing) != 0)
             {
-                DeflaterThrowHelper.ThrowAlreadyFinished();
+                DeflateThrowHelper.ThrowAlreadyFinished();
             }
 
             this.engine.SetInput(input, offset, count);
@@ -230,7 +230,7 @@ namespace SixLabors.ImageSharp.Formats.Png.Zlib
 
             if (this.state == ClosedState)
             {
-                DeflaterThrowHelper.ThrowAlreadyClosed();
+                DeflateThrowHelper.ThrowAlreadyClosed();
             }
 
             if (this.state < BusyState)