DO NOT MERGE - libstagefright: check requested memory size before allocation for SoftMPEG4Encoder and SoftVPXEncoder. am: 6afc659b00 am: 9e1d7751b1  -s ours am: 4c0d243626 am: 862b693ba3  -s ours am: db76a879ea
am: e0c9d8afd0

* commit 'e0c9d8afd0886162f19d28eb33c82878a0dada7d':
  DO NOT MERGE - libstagefright: check requested memory size before allocation for SoftMPEG4Encoder and SoftVPXEncoder.