Fix minor leak.

The tasks live during the entire life of mythbackend. Only allows nicer output following bb997346018d79678f19006bad4152cd2bd9cb14 (that is 0 objects leaked)
Revert "Resync nzmqt with upstream.  Fixes #10924."

Consistently segfault at startup

This reverts commit 6f39379cfa8f63c84548d9a25cc33264d27b478e.