Merge "libsnapuserd: Handle empty response from server" into main am: 71707037 am: 4d8631f8

Original change: https://android-review.googlesource.com/c/platform/system/core/+/3329574



Change-Id: I8ad5d689cba44b7bdd1cd0024eb08dc56859c993
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>