Fixed a DSLParser bug with struct declarations

This breakage snuck in as part of
https://skia-review.googlesource.com/c/skia/+/448269.

Change-Id: Ifa7c27e9b762bec78a76ba34b24e6b7fdd50bf0e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/449192
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
1 file changed