[roll third_party/pigweed] roll: clang

From: git_revision:b44399296a7fa4323ab32739df6dbcfc6068af8f
To: git_revision:b3a9e8f7c0afb00147ab6c6a6ad426de149420dd
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/183410
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: b45f5b2a1750304..800cdbd54315e7b
Roller-URL: https://ci.chromium.org/b/8762748010665411313
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I108e26bcafb183b7306743576ae6d0384a928a60
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/183412
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index b45f5b2..800cdbd 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit b45f5b2a175030412a27a6b27233ff6feeba63eb
+Subproject commit 800cdbd54315e7b4eb107df3e0e8e73cc007435f