Unclear return values for GenericImageView::bounds

[bjorn-ove]

This happens in at least 0.24.5

Expected

Either (x, y, width, height) or (x, width, y, height) should be returned by the GenericImageView::bounds method

Actual behaviour

• image/src/flat.rs

  Lines 1375 to 1378 in f64b52b

  	fn bounds(&self) -> (u32, u32, u32, u32) {
  	let (w, h) = self.dimensions();
  	(0, w, 0, h)
  	}

• image/src/flat.rs

  Lines 1418 to 1421 in f64b52b

  	fn bounds(&self) -> (u32, u32, u32, u32) {
  	let (w, h) = self.dimensions();
  	(0, w, 0, h)
  	}

• image/src/buffer.rs

  Lines 1150 to 1152 in f64b52b

  	fn bounds(&self) -> (u32, u32, u32, u32) {
  	(0, 0, self.width, self.height)
  	}

Reproduction steps

Look at the source code

I'm happy to fix this in a PR, but are not sure if I'm missing something obvious as the code is pretty old.