Comment 2 for bug 587627

This does not included in the Debian changelog, but this is included in file: 02-fix-ftbfs-and-hrdiagram-opts.dpatch. This file is the same in -4 revision and current -3ubuntu1 delta. My explanation in bug report is clear:

Explanation of the Ubuntu delta and why it can be dropped:
Debian has got a patch from Ubuntu delta.