Fix warnings by commenting out text after #else/#endif.

games/robots/flush_in.c

@@ -49,7 +49,7 @@ flush_in()
 {
 # ifdef TIOCFLUSH
 	ioctl(fileno(stdin), TIOCFLUSH, NULL);
-# else TIOCFLUSH
+# else /* TIOCFLUSH */
 	crmode();
-# endif TIOCFLUSH
+# endif /* TIOCFLUSH */
 }

games/robots/move_robs.c

@@ -62,7 +62,7 @@ bool	was_sig;
 	addch(inch());
 	move(Max.y, Max.x);
 	addch(inch());
-# endif DEBUG
+# endif /* DEBUG */
 	for (rp = Robots; rp < &Robots[MAXROBOTS]; rp++) {
 		if (rp->y < 0)
 			continue;
@@ -123,7 +123,7 @@ bool	was_sig;
 	move(Max.y, Max.x);
 	addch(inch());
 	standend();
-# endif DEBUG
+# endif /* DEBUG */
 	if (Real_time)
 		alarm(3);
 }

games/robots/play_level.c

@@ -67,7 +67,7 @@ play_level()
 	move(Max.y, Max.x);
 	addch(inch());
 	standend();
-# endif DEBUG
+# endif /* DEBUG */
 	setjmp(End_move);
 	flush_in();
 	while (!Dead && Num_robots > 0) {