Fix new warnings from GCC 7

Peter Eisentraut <peter_e@gmx.net>

Commit: 80a06b5acda386edcb48a98188d9bfdd7a338a4e
Author: Peter Eisentraut <peter_e@gmx.net>
Date: 2017-05-15T17:31:38Z
Releases: 9.3.18
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