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

Change-Id: Ia098ff7b7e1761e4af3ee256110f736f31860256