tree 4acc0c8ba2909c843006d40c13594380a52147ef
parent cb889759ae1654c2b5730a72398db812df57d678
author Bryan Mawhinney <bryanmawhinney@google.com> 1548440796 +0000
committer Bryan Mawhinney <bryanmawhinney@google.com> 1550251611 +0000

Don't touch empty wallpaper sentinel every backup.

Even when the diffing algorithm is good (which it may not always be),
it isn't free to apply the diff server side.

Test: manual
Change-Id: I01859a57b0a0a974b541ce03f7c35a2977df7f7c