Linux handled the extra / properly, but Windows did not,
so it had to be removed.

Change-Id: Ie42d8777aef83c0024bc9b3e5c631ece7e87e236
Reviewed-on: https://swiftshader-review.googlesource.com/8629Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>