message: Get rid of unneccessary cast
  The dimensions are already of type u32
diff: @@ -1309,7 +1309,7 @@ impl Surface for Frame {
  }
  ops::draw(&self.context, None, vertex_buffer, index_buffer.into(), program,
  - uniforms, draw_parameters, (self.dimensions.0 as u32, self.dimensions.1 as u32))
  + uniforms, draw_parameters, self.dimensions)
  }
  #[inline]
  