Fixes squiggles on marl includes.

Bug: b/140546382
Change-Id: If08700e453cade53d65926fc79eae09e6b19f05a
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/36069Reviewed-by: Chris Forbes <chrisforbes@google.com>
Tested-by: Ben Clayton <bclayton@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>