GCC 6 warning fixes

When Who What
2016-03-09 00:42:47 Peter Eisentraut (petere) Closed in commitfest 2016-03 with status: Committed
2016-03-09 00:42:38 Peter Eisentraut (petere) Added petere as committer
2016-02-29 21:50:27 Thomas Munro (macdice) New status: Ready for Committer
2016-02-29 20:35:35 Thomas Munro (macdice) Added macdice as reviewer
2016-02-25 23:54:54 Peter Eisentraut (petere) Changed authors to Peter Eisentraut (petere)
2016-02-25 23:54:22 Peter Eisentraut (petere) Attached mail thread 56C7E840.7050806@gmx.net
2016-02-25 23:54:22 Peter Eisentraut (petere) Created patch record