Replace CopyMagickMemory() with memcpy() / memmove()
diff --git a/coders/sfw.c b/coders/sfw.c
index ddd503f..f5a7861 100644
--- a/coders/sfw.c
+++ b/coders/sfw.c
@@ -279,7 +279,7 @@
     }
   TranslateSFWMarker(header);  /* translate soi and app tags */
   TranslateSFWMarker(header+2);
-  (void) CopyMagickMemory(header+6,"JFIF\0\001\0",7);  /* JFIF magic */
+  (void) memcpy(header+6,"JFIF\0\001\0",7);  /* JFIF magic */
   /*
     Translate remaining markers.
   */