Fix potential NULL dereference in Visualizer effect am: 0c39abc483 am: 18b2de20a7 am: bcd048aea2 am: 67c5eb2059 am: 996c0f33a8
am: ae2849ff1d

Change-Id: Ic71b709d17623bef1c8580c9d9c194a029f1d368
tree: 14f34775b492ed015cf123dd02710b72747de744
  1. hal/
  2. legacy/
  3. post_proc/
  4. visualizer/
  5. voice_processing/
  6. Android.mk