[js] Fix nqp::istype_nd

Author: pmurias

src/vm/js/Operations.nqp

@@ -870,7 +870,7 @@ class QAST::OperationsJS {
     add_simple_op('can', $T_INT, [$T_OBJ, $T_STR], :side_effects, :decont(0), :ctx, :method_call, :await);
 
     add_simple_op('istype', $T_INT, [$T_OBJ, $T_OBJ], :side_effects, :ctx, :decont(0, 1), :method_call, :await);
-    add_simple_op('istype_nd', $T_INT, [$T_OBJ, $T_OBJ], :side_effects, :ctx, :method_call, :await);
+    add_simple_op('istype_nd', $T_INT, [$T_OBJ, $T_OBJ], method_call('istype'), :side_effects, :ctx, :await);
 
     add_simple_op('split', $T_OBJ, [$T_STR, $T_STR], :takes_hll);