glip: Fix a divide-by-zero error which happens in ci...

This is an automated notification of a change to freeciv cvs, 
on Sat May 22 19:18:25 PDT 2004 = Sun May 23 02:18:25 2004 (GMT)
by Gregory Berkolaiko <Gregory.Berkolaiko@xxxxxxxxxxxx>

---- Files affected:

freeciv/ai advmilitary.c

---- Log message:
      Tag: HEAD

Fix a divide-by-zero error which happens in civ1 ruleset when a low-quality
unit is interviewed for the terminator job.

Reported by Jason, patch by Raimar and myself (PR#8791).