ndk/media_codec: Simplify dequeue_output_buffer() with MaybeUninit (

#402)

ndk/src/media/media_codec.rs

@@ -9,6 +9,7 @@ use std::{
  convert::TryInto,
  ffi::{CStr, CString},
  fmt::Display,
+ mem::MaybeUninit,
  ptr::{self, NonNull},
  slice,
  time::Duration,
@@ -318,12 +319,12 @@ impl MediaCodec {
  &self,
  timeout: Duration,
  ) -> Result<DequeuedOutputBufferInfoResult<'_>> {
- let mut info: ffi::AMediaCodecBufferInfo = unsafe { std::mem::zeroed() };
+ let mut info = MaybeUninit::uninit();
 
  let result = unsafe {
  ffi::AMediaCodec_dequeueOutputBuffer(
  self.as_ptr(),
- &mut info,
+ info.as_mut_ptr(),
  timeout
  .as_micros()
  .try_into()
@@ -341,7 +342,7 @@ impl MediaCodec {
  Ok(DequeuedOutputBufferInfoResult::Buffer(OutputBuffer {
  codec: self,
  index: result as usize,
- info,
+ info: unsafe { info.assume_init() },
  }))
  } else {
  Err(MediaError::from_status(ffi::media_status_t(result as _)).unwrap_err())