Sample/AAGeometry: stop leaking linked list

Change-Id: I8bba87244becf1352e713c08aee355ebbd83e45f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/227058
Auto-Submit: Hal Canary <halcanary@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
1 file changed