In libVulkan.cpp, many structures are received as pointers,
which are dereferenced, only to be references on the next line.
We can just take the pointers as is.

Bug: b/144943261
Change-Id: I60585ab5e953dc9baf1f6951a3762c890ab95641
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/38530
Presubmit-Ready: Alexis Hétu <sugoi@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>