#13 infinite loop when trying to build something that the server

[Shelby Davis]

If the user tries to build something and hasn't satisfied the dependency chain, or just isn't able to build it (i.e. Romans building trappers) The bot goes into an infinite loop until the user kills the offending command.
This is especially annoying with romans and building an iron foundry after issuing the build command for the first iron mine level 10.