Increases the range of random encounter maps by 1, so that the caravan encounter can be correctly handled as random encounter.

v15
code changes:

new: (was 13D4)
1006FE1B  |.  3D D5130000   CMP EAX,13D5
1007173C  |.  3D D5130000   CMP EAX,13D5
1012BDF2   .  3D D5130000   CMP EAX,13D5
1012C1EC   .  3D D5130000   CMP EAX,13D5
1012C361  |.  3D D5130000   CMP EAX,13D5

new: (was 02)
1006ED1E                       .  04