DO NOT MERGE - libstagefright: check requested memory size before allocation for SoftMPEG4Encoder and SoftVPXEncoder. am: 50270d98e2 am: 1856f1fe34
am: 2c59cc083d  -s ours

* commit '2c59cc083d471fe55abc61870d05952bd242b738':
  DO NOT MERGE - libstagefright: check requested memory size before allocation for SoftMPEG4Encoder and SoftVPXEncoder.