message: Use ptr::null_mut for void pointer initialization
diff: @@ -1510,7 +1510,7 @@ pub trait DeviceV1_0 {
  size: vk::DeviceSize,
  flags: vk::MemoryMapFlags,
  ) -> VkResult<*mut c_void> {
  - let mut data: *mut c_void = mem::zeroed();
  + let mut data: *mut c_void = ptr::null_mut();
  let err_code =
  self.fp_v1_0()
  .map_memory(self.handle(), memory, offset, size, flags, &mut data);
  