[Merge] ~powersj/livecd-rootfs/+git/livecd-rootfs:fix-unbound-variable into livecd-rootfs:ubuntu/master

[Joshua Powers]

The proposal to merge ~powersj/livecd-rootfs/+git/livecd-rootfs:fix-unbound-variable into livecd-rootfs:ubuntu/master has been updated.

Description changed to:

With the recent snap preseed changes, the channel variable is not always set. The next few lines even check for this, but the daily Groovy builders are throwing errors due to the unbound variable:

/build/config/functions: line 643: $3: unbound variable

For more details, see:
https://code.launchpad.net/~powersj/livecd-rootfs/+git/livecd-rootfs/+merge/387329
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Your team Ubuntu Core Development Team is requested to review the proposed merge of ~powersj/livecd-rootfs/+git/livecd-rootfs:fix-unbound-variable into livecd-rootfs:ubuntu/master.