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

src/display.c

@@ -1483,7 +1483,7 @@ extern glyph_map glyphmap[MAX_GLYPH]; /* from tile.c */
 glyph_map glyphmap[MAX_GLYPH] = {
     { 0U, { 0, 0}, 0
 #ifdef ENHANCED_SYMBOLS
-	    , 0
+            , 0
 #endif
     }
 };