resolves the breaking of distance view in nav mode

- fixes broken distance view
A bit of a corner case, but this layout is still broken for (very) long distances. Perhaps a better solution is to set the layout width to `wrap_content` for the turn info rather than using a hard-coded value.

![device-2014-08-07-161325](https://cloud.githubusercontent.com/assets/464123/3848481/4d7422fc-1e70-11e4-9ccb-1c02efd85fc6.png)