am dfee3ff2: Fix a crash when you scroll MessageList to junk @ bottom

Merge commit 'dfee3ff278c4f5d9f7b8273c0e6ecab42585213e' into eclair-mr2

* commit 'dfee3ff278c4f5d9f7b8273c0e6ecab42585213e':
  Fix a crash when you scroll MessageList to junk @ bottom