cleaned up whitespace

src/ImageSharp/Formats/Png/PngDecoderCore.cs

@@ -336,6 +336,14 @@ namespace SixLabors.ImageSharp.Formats.Png
                                 break;
                             case PngChunkType.End:
                                 goto EOF;
+
+                            default:
+                                if (this.colorMetadataOnly)
+                                {
+                                    this.SkipChunkDataAndCrc(chunk);
+                                }
+
+                                break;
                         }
                     }
                     finally
@@ -1398,8 +1406,6 @@ namespace SixLabors.ImageSharp.Formats.Png
             {
                 chunk = new PngChunk(length, type);
 
-                this.SkipChunkDataAndCrc(chunk);
-
                 return true;
             }