fixes:
gav1_jni.cc:446:25: error: cast from pointer to smaller type 'int' loses information
const int buffer_id = reinterpret_cast<int>(buffer_private_data);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gav1_jni.cc:730:9: error: cast from pointer to smaller type 'int' loses information
reinterpret_cast<int>(decoder_buffer->buffer_private_data);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
after https://github.com/google/ExoPlayer/commit/0915998add5918214fa0282a69b50a159168a6d5
PiperOrigin-RevId: 295211245
