This caused linux to fail to autogenerate the entry points.

BUG=angleproject:3611

Change-Id: Ia383ed134b1a4ecbcd5e03dca365cd21b8660ffe
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1690680Reviewed-by: Jamie Madill <jmadill@chromium.org>