am 53dcdeeb: Don\'t restore old brightness when cancelling brightness dialog in automatic mode.

Merge commit '53dcdeeb85e523e0b752d802d3413f5d4001d575' into eclair-mr2

* commit '53dcdeeb85e523e0b752d802d3413f5d4001d575':
  Don't restore old brightness when cancelling brightness dialog in automatic mode.