LibELF: Refactor coredump notes section structures

Author: https://github.com/itamar8910
Commit: 349c6780ce
Pull-request: https://github.com/SerenityOS/serenity/pull/3738
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/awesomekling

Kernel/CoreDump.h

@@ -26,6 +26,7 @@
  */
 
 #pragma once
+
 #include <AK/NonnullRefPtr.h>
 #include <AK/OwnPtr.h>
 #include <Kernel/Forward.h>