another fix for corewar

[Russell Spence]

Here is another fix for corewar bugs.  On line 294
		if ( -1 == (p1 = do_instruction(p1))) return 1;	
should be
		if ( -1 == (p1 = do_instruction(p1))) return 2;	
-- 

						Russell Spence
						ihuxi!jaczak
						AT&T Technologies
						Naperville, IL