Merge "Factor out freeing of stack buffer to ease testing" into main am: 1243e215e1

Original change: https://android-review.googlesource.com/c/platform/bionic/+/3344405

Change-Id: Ib496085ce0b51d122f46c92e72a29500fbb70e8a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>