Fix array indices in exec/array_index_access_order.mj

exec/array_index_access_order.mj

@@ -5,11 +5,11 @@ class B {
         while(x < 4) {
             i[x] = (x = x + 1);
         }
-        x = 0;
+        x = -1;
         while(x < 4) {
             System.out.println(i[(x = x + 1)]);
         }
 
     }
 
-}
\ No newline at end of file
+}