Fix integer overflow in mediadrmserver am: eb21712f81 am: 5250bc1bec am: d1a854a073 am: 7a22df06c3 am: 4e339cbca4 am: 1248e62082 am: fdfb9d206d am: a64aff4551 am: 87e076681b am: 8d214cd0b0
am: 1ce2364aa0

Change-Id: I408469564b54bb9dc393ab955236406c1c01f22e