cm.c: Reduce number of consequtive city_size_get() calls
Some functions in cm.c call city_size_get() for the same city, with no possibility of change in size, multiple times. No real harm done at the moment, as it's a simple inline function, but could be cleaned.
Some functions in cm.c call city_size_get() for the same city, with no possibility of change in size, multiple times. No real harm done at the moment, as it's a simple inline function, but could be cleaned.