roll: third_party/pigweed pw_build: Fix ZEPHYR_BASE environment variable lookup
`os.environ["ZEPHYR_BASE"]` will raise a `KeyError` if the ZEPHYR_BASE
environment variable is not set. Use `os.environ.get("ZEPHYR_BASE")`
instead for fallible lookup.
Test: Ran `pw build --step zephyr_build` and no longer saw a KeyError.
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/337612
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Original-Revision: 8649b39b6051b2ab623420bf5f9c075584810cb9
Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 49c68f64c2ff16..8649b39b6051b2
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8700088786898947617
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I7dff04f264057686397a56741612743469ee98ae
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/337832
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed index 49c68f6..8649b39 160000 --- a/third_party/pigweed +++ b/third_party/pigweed
@@ -1 +1 @@ -Subproject commit 49c68f64c2ff1670c566aeb4f29e282e4315bcaa +Subproject commit 8649b39b6051b2ab623420bf5f9c075584810cb9