[ Reason ]
Fix FTBFS bug #1102303.

[ Impact ]
Trying to build the package may result in a build error.

[ Tests ]
I've tested that the package builds ok on the systems where it used to fail.

[ Risks ]
Very low. No real code changes. We are just skipping a test.

[ Checklist ]
   [X] *all* changes are documented in the d/changelog
   [X] I reviewed all changes and I approve them
   [X] attach debdiff against the package in (old)stable
   [X] the issue is verified as fixed in unstable

[ Changes ]
See changelog.

[ Other info ]
Change is trivial. I will upload next.