VertexRoutineFuzzer.cpp was not updated as part of 6897e9b1.

Fixes Chromium roller.

Bug: b/137524292
Bug: b/137649247
Change-Id: I494ae1b6af07326013778251852816b5783666c4
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/34451
Presubmit-Ready: Ben Clayton <bclayton@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Ben Clayton <bclayton@google.com>