[Merge] ~vanvugt/ubuntu/+source/mutter:fix-lp1832138 into ~ubuntu-desktop/ubuntu/+source/mutter:ubuntu/bionic

[Iain Lane]

Review: Disapprove

It's my understanding that this bug was fixed in the kernel, and so this patch for mutter isn't required. Let me know if that's not true.
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https://code.launchpad.net/~vanvugt/ubuntu/+source/mutter/+git/mutter/+merge/369083
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