tree a2f54bbc268e84c7207f1aa87110c7db1c8a548d
parent 53d6a7b8955e9377cc0a12206be357e7936621b1
author Warren Turkal <wt@ooyala.com> 1385598057 -0800
committer Warren Turkal <wt@ooyala.com> 1386833041 -0800

Don't backtrace when current branch is not uploadable.

The backtrace currently occurs when one uses the "--cbr" argument with
the repo upload subcommand if the current branch is not tracking an
upstream branch. There may be other cases that would backtrace as well,
but this is the only one I found so far.

Change-Id: Ie712fbb0ce3e7fe3b72769fca89cc4c0e3d2fce0