Bug#797687: Upstream merged pull request resolves this bug

[Antonio Russo]

Unlike my previous, inaccurate claim, a patch resolving this bug
has now indeed been merged upstream:

https://github.com/collectd/collectd/pull/1553

https://github.com/collectd/collectd/commit/10b10a6718dbb87c6890d4bc821a6e21c8b7b527