tree 084a7642a9f36c482655bfa1508dfcd3485a2e52
parent e88e2665471c7b620fd3b1baca024fc9e705ee32
author Jeff Sharkey <jsharkey@android.com> 1456332854 -0700
committer Jeff Sharkey <jsharkey@android.com> 1456332856 -0700

Don't try caching null ringtones.

Bug: 27330629
Change-Id: Id09d10d6f4a3a20782480647c68a5c94ef69e7b3