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 am: 00d12e3037 am: 67f8e40fcd
am: 1b1d8e79a3

Change-Id: Id5bcf06adb7e93dbe6f5d1d5a2d8c07bfc9c1a1c