Make AppData creation symmetric
Make AppData creation symmetric

AppData was being created in SSL_do_handshake, but freed in SSL_free.
Make it symmetric by creating AppData in SSL_new instead.

The SSLEngine may call do_handshake multiple times to complete a
handshake, but this was creating an AppData each time it entered.
Creating in SSL_new avoids the problem of checking whether it was
already created on each entry into SSL_do_handshake calls.

Bug: 14247219
Change-Id: I825486798250998a4d4141201bda68a4dffe13a4

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