client/app: Don't throw exceptions if __buildat_file_updated_in_cache doesn't exist (it exists only after extensions/urho3d is loaded)
client/app: Don't throw exceptions if __buildat_file_updated_in_cache doesn't exist (it exists only after extensions/urho3d is loaded)

celeron55/buildat,celeron55/buildat,celeron55/buildat,celeron55/buildat