am 0c5b5883: am 1325f557: Stop crashing on invalid wallpaper thumbnail images.

Merge commit '0c5b58833a24586d1c414ca24123c8f10c1ceca0' into eclair-mr2-plus-aosp

* commit '0c5b58833a24586d1c414ca24123c8f10c1ceca0':
  Stop crashing on invalid wallpaper thumbnail images.