SI-4267 - fix to avoid XMLEventReader swallows IO/Parse exception

[dacr]

and so avoid threads leak and application that do not exit naturally.

[adriaanm]

Thanks, this will be included in the 1.0.1 release, which will be part of 2.11.0-RC2.

Next time, please keep the length of the commit title under 70 chars to avoid truncation.

SI-4267 avoid thread leak in XMLEventReader, don't swallow exceptions

Also, it would really help to have the commit message explain a bit more.
I still don't understand how this fix and the test are related by just looking at this PR.

I'll merge as-is because I really appreciate the work you've put in, and because I feel bad about the testing infrastructure fail :-)