This effectively reverts ff60abaf. The crash no longer
occurs on Apple.

Bug: angleproject:4442
Change-Id: I4aa745c80a482eb99311f3810e34124afe950cfe
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2588429Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Mohan Maiya <m.maiya@samsung.com>