Fix security vulnerability: Equalizer command might allow negative indexes am: e981cca9ff am: 8fb8275471 am: 6b4cf2c0d3 am: dd060b3bb4 am: 4bcf2e6fbe am: 81e0914473 am: 3d16a9c4b4
am: cde28c8a31

Change-Id: Iea428f833bb083a5a4abcdc3cef2cabb4a19760a