Readd deleted code...

Author: stefannikolei

src/ImageSharp/Formats/Tga/TgaDecoderCore.cs

@@ -262,6 +262,13 @@ private void ReadPaletted<TPixel>(BufferedReadStream stream, int width, int heig
                             ReadPalettedBgr24Pixel(stream, palette, colorMapPixelSizeInBytes, x, color, pixelRow);
                         }
                     }
+                    else
+                    {
+                        for (int x = 0; x < width; x++)
+                        {
+                            ReadPalettedBgr24Pixel(stream, palette, colorMapPixelSizeInBytes, x, color, pixelRow);
+                        }
+                    }
 
                     break;
 
@@ -273,6 +280,13 @@ private void ReadPaletted<TPixel>(BufferedReadStream stream, int width, int heig
                             ReadPalettedBgra32Pixel(stream, palette, colorMapPixelSizeInBytes, x, color, pixelRow);
                         }
                     }
+                    else
+                    {
+                        for (int x = 0; x < width; x++)
+                        {
+                            ReadPalettedBgra32Pixel(stream, palette, colorMapPixelSizeInBytes, x, color, pixelRow);
+                        }
+                    }
 
                     break;
             }