some tabs to spaces

cd src
    grep -P -n '\t' *.c | grep -v "1:"
    cd ../include
    grep -P -n '\t' *.h | grep -v "1:"
    cd ..

side note: win/Qt/*.cpp are full of tabs

include/spell.h

@@ -1,5 +1,5 @@
 /* NetHack 3.7	spell.h	$NHDT-Date: 1646838388 2022/03/09 15:06:28 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.14 $ */
-/* Copyright 1986, M. Stephenson				  */
+/* Copyright 1986, M. Stephenson                                  */
 /* NetHack may be freely redistributed.  See license for details. */
 
 #ifndef SPELL_H