Fix off-center ProgressIndicator on Gingerbread

Currently on Gingerbread on a ZTE Blade 2, the progress indicator jumps to the top left:

![broken](https://f.cloud.github.com/assets/1798519/564612/c82f1d04-c583-11e2-8a85-8224f68627fc.gif)

This pull request fixes it:

![fixed](https://f.cloud.github.com/assets/1798519/564614/d0d29d82-c583-11e2-93c0-da01d8ff5554.gif)