jdorje: Optimize base_city_map_to_map by checking if...

This is an automated notification of a change to freeciv cvs, 
on Mon Jan 12 19:18:19 PST 2004 = Tue Jan 13 03:18:19 2004 (GMT)
by Jason Dorje Short <jshort@xxxxxxxxxxxxxx>

---- Files affected:

freeciv/common city.c

---- Log message:
      Tag: HEAD

Optimize base_city_map_to_map by checking if we are at a border map
position before normalizing.

Issued as PR#7197.