DO NOT MERGE - libstagefright: check requested memory size before allocation for SoftMPEG4Encoder and SoftVPXEncoder. am: 0462975291
am: 3e8e134597  -s ours

* commit '3e8e1345971927e0aa5e55c34f79f6856101a96b':
  DO NOT MERGE - libstagefright: check requested memory size before allocation for SoftMPEG4Encoder and SoftVPXEncoder.