Fix fetch-sk on Windows

Change-Id: Iac7db5bec874ebb7b695ef9890609d54b2afe061
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/435881
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
1 file changed