Fix glBindVertexArray() compilation regression.

Change-Id: I7da54053b3be31b4388dd9c0f4d89298e656bee2
Reviewed-on: https://swiftshader-review.googlesource.com/4556
Tested-by: Nicolas Capens <capn@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>