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

Change-Id: Ie5117ea6b3f54b6ce0ae4b187166dd9660d70ac4