[Freeciv-Dev] (PR#17968) caravan formula

["Curtis Warren" <cwarren89@xxxxxxxxx>]

<URL: http://bugs.freeciv.org/Ticket/Display.html?id=17968 >

Looking through the caravan code, I found the following to calculate
the revenue for a caravan entering a marketplace:

> } else {
>    /* enter marketplace */
>    revenue = (revenue + 2) / 3;
> }

The "+2" looks somewhat odd; is it supposed to be "*2" ?