Fix AMediaExtractor_getSampleCryptoInfo returning iv as key.

There is a typo such that iv is returned as the crypto key in
the AMediaCodecCryptoInfo object.

kKeyCryptoKey should replace kKeyCryptoIV when searching for
the crypto key in the meta data.

bug: 31158746
Change-Id: I68c266b69fdb801b2b1182bbffe9a31cab7be6ce
1 file changed