silverstripe/sapphire — pull request #1739 by kinglozzer (2013-04-09 10:22:36+00:00)
Title: FIX: Edge case attempting to destroy uninitialized tabs

Another edge case very similar to
https://github.com/silverstripe/sapphire/commit/07fb7563273fa82bd93eb255
70571c0a298198e5