Infinite recursion in apply for IdentityOperator * scalar

[pmli]

from pymor.operators.constructions import IdentityOperator
from pymor.vectorarrays.numpy import NumpyVectorArray
import numpy as np

v = NumpyVectorArray(np.array([1, 2, 3]))
A = IdentityOperator(v.space) * 3

A.apply(v)

causes RuntimeError: maximum recursion depth exceeded in comparison.

(Observed when replacing LincombOperator((A, I), (1, p)) with A + I * p.)

[sdrave]

Hi, I have just pushed f562037 to master and the 0.4.x branch, which should make the above code work.