Bug 1526769 - always initialize local_transform to the identity matri…
40a33c2
…x r=nical [wrupdater] From #3547 Differential Revision: https://phabricator.services.mozilla.com/D19305 [wrupdater] From https://hg.mozilla.org/mozilla-central/rev/0d65ca0a00195e03b4b7976d6bbbf5c5cb0c9d93
