From 44d1aae2b367150c5c895c4c9cec26f222ee4119 Mon Sep 17 00:00:00 2001
From: Scott Williams <tocsoft@gmail.com>
Date: Tue, 11 Apr 2017 10:42:14 +0100
Subject: [PATCH] return alpha array to array pool

---
 src/ImageSharp/Formats/Png/PngEncoderCore.cs | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/ImageSharp/Formats/Png/PngEncoderCore.cs b/src/ImageSharp/Formats/Png/PngEncoderCore.cs
index e6ade1df03..469c459fb9 100644
--- a/src/ImageSharp/Formats/Png/PngEncoderCore.cs
+++ b/src/ImageSharp/Formats/Png/PngEncoderCore.cs
@@ -529,19 +529,20 @@ namespace ImageSharp.Formats
                 }
 
                 this.WriteChunk(stream, PngChunkTypes.Palette, colorTable, 0, colorTableLength);
+
+                // Write the transparency data
+                if (anyAlpha)
+                {
+                    this.WriteChunk(stream, PngChunkTypes.PaletteAlpha, alphaTable, 0, pixelCount);
+                }
             }
             finally
             {
                 ArrayPool<byte>.Shared.Return(colorTable);
+                ArrayPool<byte>.Shared.Return(alphaTable);
                 ArrayPool<byte>.Shared.Return(bytes);
             }
 
-            // Write the transparency data
-            if (anyAlpha)
-            {
-                this.WriteChunk(stream, PngChunkTypes.PaletteAlpha, alphaTable, 0, pixelCount);
-            }
-
             return quantized;
         }