This CL contains minor tweaks to the style of our code to make clang-format produce prettier code.

Bug: b/144825072
Change-Id: I821ecd3b9f408a4034992c2cc7ece2ef8552fe08
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/39314Tested-by: Ben Clayton <bclayton@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>