Comment # 10 on bug 1065270 from Michael Gorse

I think that this is a different bug from bug 1084286. The latter is a use
after free issue. Anyway, I'm seeing another instance of this bug when running
itstool on a .mo file. This is clearly passing bad data to libxml2, but it
should print an error, as it does on python 2, rather than crashing.

I think that the code in types.c should check the return value of
PY_IMPORT_STRING and avoid returning NULL. I'm going to submit a merge request
upstream to do that.

Was the patch that we already have for this bug ever sent upstream?