[roll third_party/pigweed] pw_function: Function definition to pw namespace
Moves the defintion out of pw::function_internal and into the
pw namespace. This ensures that the std::nullptr_t comparison
helpers work and also makes it easier to users to find/read the
public API.
In addition the comparison helpers were updated to use explicit
static_cast bool conversions instead of using double negatives.
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/54901
third_party/pigweed Rolled-Commits: 889d27b514005e4..fee9455974ccf35
Roller-URL: https://ci.chromium.org/b/8840511511361895568
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8840511511361895568
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I73a74948c9786f479df0fd9474a8fa12790eef73
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/54882
Reviewed-by: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 889d27b..fee9455 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 889d27b514005e4657efbd847e000ed7f1c24316
+Subproject commit fee9455974ccf3528093ae9cc11e8832709c9f87
