Fix security vulnerability: Equalizer command might allow negative indexes am: ceb7b2d7a4 am: f7d23525f2 am: e25cc47887 am: 41c5a0185b am: 1e31fc2fe1 am: f436af62a4 am: 93f5e649af am: ca11e5d68a am: 716d65bc06 am: f273b59b35 am: 7176e525cf am: 979b99faf9
am: ad2ae6a151

Change-Id: I46567d530e5c86dc7938607284c8b51ba07cb7d7