__reduce__ do not perform eager lookup of builtin types

Author: cosminbasca

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/map/MapBuiltins.java

@@ -185,7 +185,7 @@ PTuple doit(PMap self, @SuppressWarnings("unused") Object ignored) {
             Object[] args = new Object[iterators.length + 1];
             args[0] = self.getFunction();
             System.arraycopy(iterators, 0, args, 1, iterators.length);
-            return factory().createTuple(new Object[]{getCore().lookupType(PythonBuiltinClassType.PMap), factory().createTuple(args)});
+            return factory().createTuple(new Object[]{PythonBuiltinClassType.PMap, factory().createTuple(args)});
         }
     }
 }