Merge "storaged: use correct accumulate variable for publishing disk stats"...

Merge "storaged: use correct accumulate variable for publishing disk stats" am: 14c7361f am: 15b9050a am: eec6697b

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2433362



Change-Id: I72244c7b535b3dd118ad74f19790ed5b25e90d9a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>