`windows-bindgen` _Impl trait should use `unsafe fn` if any of its parameters are pointers

#[implement(Windows::Win32::Graphics::Imaging::IWICBitmapFrameDecode)]
pub struct Foo {}

impl IWICBitmapSource_Impl for Foo {
    fn GetSize(&mut self, puiwidth: *mut u32, puiheight: *mut u32) -> windows::core::Result<()> {
        unsafe {
            *puiwidth = 0u32;
            *puiheight = 0u32;
        }
        Ok(())
    }
    /* ... */
}

error: this public function might dereference a raw pointer but is not marked `unsafe`
   --> src\lib.rs:149:14
    |
149 |             *puiwidth = self.decoded.borrow().basic_info.xsize;
    |              ^^^^^^^^
    |
    = note: `#[deny(clippy::not_unsafe_ptr_arg_deref)]` on by default
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#not_unsafe_ptr_arg_deref