Avoid structured bindings that trigger gcc bug

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78939

Change-Id: I412dbe28141ec26bb7ba2a8f8da9a936d4bef044
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/384260
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
1 file changed