am 329c13cb: SDK Updater: refine error handling when fetching sources.

Merge commit '329c13cbe3b771804dbd7d0d5f25b3a51cc6ebee'

* commit '329c13cbe3b771804dbd7d0d5f25b3a51cc6ebee':
  SDK Updater: refine error handling when fetching sources.