am 16c29bd7: Merge "SIP: Fix busy authentication loop." into gingerbread

Merge commit '16c29bd7f2ce147fd2f39f1f36df88d1b04a5387' into gingerbread-plus-aosp

* commit '16c29bd7f2ce147fd2f39f1f36df88d1b04a5387':
  SIP: Fix busy authentication loop.