CMake variables were renamed in
https://swiftshader-review.googlesource.com/c/SwiftShader/+/39909

This means regres has been running without DCHECK_ALWAYS_ON enabled,
possibly resulting in false positives when SwiftShader would assert.

Bug: n/a
Change-Id: Ifc4963a6c562bd21db9e1775e06dc5d4ff20f290
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/41908Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Antonio Maiorano <amaiorano@google.com>