OpenSSLCipher: multiple calls to updateAAD were ignored
OpenSSLCipher: multiple calls to updateAAD were ignored

Do to a missing assignment statement, only the first call to updateAAD
was honored and the rest were discarded.

Bug: 27371173
Change-Id: I77ad7800b0905f72d5abe76b56352a94056ceb9c

google/conscrypt,google/conscrypt,google/conscrypt,google/conscrypt,google/conscrypt,google/conscrypt