Fixed sample video corrupted in MediaCodec mode.

Change-Id: I50c5660072d40f6e297e58fd026ea04c89d6a70a
related-to-bug: 6732061
diff --git a/media/libmediaplayerservice/Crypto.cpp b/media/libmediaplayerservice/Crypto.cpp
index d35d5b1..0e8f913 100644
--- a/media/libmediaplayerservice/Crypto.cpp
+++ b/media/libmediaplayerservice/Crypto.cpp
@@ -141,7 +141,7 @@
     return mPlugin->requiresSecureDecoderComponent(mime);
 }
 
-status_t Crypto::decrypt(
+ssize_t Crypto::decrypt(
         bool secure,
         const uint8_t key[16],
         const uint8_t iv[16],