Merge "printflags: improve protobuf decode error message" into main am:...

Merge "printflags: improve protobuf decode error message" into main am: dcbe6097 am: 6df36db6 am: 79d173ed

Original change: https://android-review.googlesource.com/c/platform/build/+/2779288



Change-Id: I0a518643c1ace91fa42b08945750da94518a6fd0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>