Update Machine.java

mutants/mutant-5/swen90006/machine/Machine.java

@@ -243,7 +243,7 @@ public class Machine
 	  throw new InvalidInstructionException();
 	}
 	int rd = parseReg(toks[1]);
-	int rs = parseReg(toks[2]-1);
+	int rs = parseReg(toks[2])-1;
 	int offs = parseOffset(toks[3]);
 	do_load(rd,rs,offs);
       } else if (toks[0].equals(INSTRUCTION_STORE)){