cairo error when using similarity maps

[greglandrum]

To Reproduce
Here's the contents of foo.py

from rdkit import Chem
from rdkit.Chem import Draw
from rdkit.Chem.Draw import SimilarityMaps
import rdkit
print(rdkit.__version__)

atorvastatin = Chem.MolFromSmiles('O=C(O)C[C@H](O)C[C@H](O)CCn2c(c(c(c2c1ccc(F)cc1)c3ccccc3)C(=O)Nc4ccccc4)C(C)C')

from rdkit.Chem import rdMolDescriptors
ator_contribs = rdMolDescriptors._CalcCrippenContribs(atorvastatin)
d = Draw.MolDraw2DCairo(400, 400)
# d.DrawMolecule(atorvastatin)
SimilarityMaps.GetSimilarityMapFromWeights(atorvastatin,[x[0] for x in ator_contribs],draw2d=d)
d.FinishDrawing()
png = d.GetDrawingText()

and here's what happens when you run it:

$ python foo.py
[16:05:41]

****
Pre-condition Violation
no draw context
Violation occurred on line 203 in file D:\bld\rdkit_1654409205274\work\Code\GraphMol\MolDraw2D\MolDraw2DCairo.cpp
Failed Expression: dp_cr
****

2022.03.3
Traceback (most recent call last):
  File "C:\Users\glandrum\foo.py", line 13, in <module>
    SimilarityMaps.GetSimilarityMapFromWeights(atorvastatin,[x[0] for x in ator_contribs],draw2d=d)
  File "C:\Users\glandrum\mambaforge\envs\my-rdkit-env\lib\site-packages\rdkit\Chem\Draw\SimilarityMaps.py", line 172, in GetSimilarityMapFromWeights
    draw2d.ClearDrawing()
RuntimeError: Pre-condition Violation
        no draw context
        Violation occurred on line 203 in file Code\GraphMol\MolDraw2D\MolDraw2DCairo.cpp
        Failed Expression: dp_cr
        RDKIT: 2022.03.3
        BOOST: 1_74

Uncommenting the d.DrawMolecule(atorvastatin) line clears up the error.

Configuration (please complete the following information):

• RDKit version: 2022.03.x (and master)
• OS: all (tested on windows and linux)
• Python version (if relevant): all