Don't use structured binding on the PathStroke struct

Change-Id: I6aa2890ac9790c41acf405f7b3f83c402479cdf4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/372160
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
2 files changed