This fixes a trivial mistake in #15533, caused by me misreading the spec. r? @Manishearth
Source-Repo: https://github.com/servo/servo
Source-Revision: 3fa9ce16db910c0b44617dafdcd8e76b6f813c61
--HG--
extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear
extra : subtree_revision : 668d521e0ecc9c92b9d5f7af48d72eeffc490815