Fix new warnings from GCC 7

Peter Eisentraut <peter_e@gmx.net>

Commit: 7fc5615afdda0a1bae21c7d0fc47a376e7a8eda2
Author: Peter Eisentraut <peter_e@gmx.net>
Date: 2017-05-15T17:31:42Z
Releases: 9.4.13
Fix new warnings from GCC 7

This addresses the new warning types -Wformat-truncation
-Wformat-overflow that are part of -Wall, via -Wformat, in GCC 7.

Files