message: Minimize unsafe block to unsafe code
diff: @@ -159,8 +159,7 @@ impl LocalBacking {
  LocalOrImport::Import(imported_memory_index) => {
  // Write the initialization data to the memory that
  // we think the imported memory is.
  - unsafe {
  - let local_memory = &*imports.vm_memories[imported_memory_index];
  + let local_memory = unsafe { &*imports.vm_memories[imported_memory_index] };
  let data_top = init_base + init.data.len();
  if local_memory.bound < data_top || data_top < init_base {
  return Err(vec![LinkError::Generic {
  @@ -170,7 +169,6 @@ impl LocalBacking {
  }
  }
  }
  - }
  // Initialize data
  for init in module.info.data_initializers.iter() {
  @@ -199,18 +197,16 @@ impl LocalBacking {
  LocalOrImport::Import(imported_memory_index) => {
  // Write the initialization data to the memory that
  // we think the imported memory is.
  - unsafe {
  + let memory_slice = unsafe {
  let local_memory = &*imports.vm_memories[imported_memory_index];
  - let memory_slice =
  - slice::from_raw_parts_mut(local_memory.base, local_memory.bound);
  + slice::from_raw_parts_mut(local_memory.base, local_memory.bound)
  + };
  - let mem_init_view =
  - &mut memory_slice[init_base..init_base + init.data.len()];
  + let mem_init_view = &mut memory_slice[init_base..init_base + init.data.len()];
  mem_init_view.copy_from_slice(&init.data);
  }
  }
  }
  - }
  Ok(memories
  .iter_mut()
  