euca-get-console-output fails if output not to a console [error: decode() argument 1 must be string, not None]

Filed upstream as https://eucalyptus.atlassian.net/browse/TOOLS-407

If i redirect stdout of euca-get-console-output to a file or to a pipe, it fails with:
euca-get-console-output: error: decode() argument 1 must be string, not None

This is terribly unhelpful, as if I'm looking for console output, I most likely want to do something other than just read it manually (ie, search it or grep it).

$ dpkg-query --show euca2ools
euca2ools 3.0.2-1

$ IID=i-36874418
$ euca-get-console-output --region=us-east-1 $IID > /tmp/out
euca-get-console-output: error: decode() argument 1 must be string, not None
$ echo $?
1

$ euca-get-console-output --region=us-east-1 $IID | tee $IID.log
euca-get-console-output: error: decode() argument 1 must be string, not None
i-36874418
2014-01-07T19:25:52.000Z

$ euca-get-console-output --region=us-east-1 $IID
i-36874418
2014-01-07T19:25:52.000Z
Xen Minimal OS!
start_info: 0xac4000(VA)
nr_pages: 0x26700

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: euca2ools 3.0.2-1
ProcVersionSignature: Ubuntu 3.12.0-2.7-generic 3.12.0
Uname: Linux 3.12.0-2-generic x86_64
ApportVersion: 2.12.7-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Jan 7 15:15:57 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2011-10-19 (811 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
PackageArchitecture: all
SourcePackage: euca2ools
UpgradeStatus: Upgraded to trusty on 2013-05-20 (232 days ago)