Fix clippy::mem_replace_with_default, use std::mem::take

src/gl/mod.rs

@@ -797,7 +797,7 @@ impl Drop for MappedBuffer {
         unsafe {
             glow_context().unmap_buffer(self.target);
         }
-        mem::forget(mem::replace(&mut self.inner, Vec::new()));
+        mem::forget(std::mem::take(&mut self.inner))
     }
 }
 

src/model/mod.rs

@@ -547,7 +547,7 @@ impl Factory {
             ambient_occlusion: raw.ambient_occlusion,
             weight: raw.weight,
         };
-        let elements = ::std::mem::replace(&mut raw.elements, vec![]);
+        let elements = std::mem::take(&mut raw.elements);
         for el in elements {
             let all_dirs = Direction::all();
             for (i, face) in el.faces.iter().enumerate() {