Adding coder headers with coder.xml will no longer be supported.
diff --git a/MagickCore/coder.h b/MagickCore/coder.h
index ecb474c..180cca4 100644
--- a/MagickCore/coder.h
+++ b/MagickCore/coder.h
@@ -28,11 +28,11 @@
     *path,
     *magick,
     *name;
-                                                                                
+
   MagickBooleanType
     exempt,
     stealth;
-                                                                                
+
   size_t
     signature;
 } CoderInfo;