Mats Palmgren ac0c539c86 Bug 1400618 part 4 - Destroy frames before calling nsXBLBinding::ChangeDocument in a few places. r=bz
nsXBLBinding::ChangeDocument calls UnbindAnonymousContent
which calls UnbindFromTree on the content so any frames must be
destroyed before that to maintain the invariant that frames are
destroyed before unbinding.

MozReview-Commit-ID: 8Icj7zqpuZS
2017-11-07 01:20:34 +01:00
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