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Co-authored-by: Many <many@meilisearch.com>

milli/src/heed_codec/roaring_bitmap/cbo_roaring_bitmap_codec.rs

@@ -82,7 +82,7 @@ impl CboRoaringBitmapCodec {
                     buffer.extend_from_slice(&integer.to_ne_bytes());
                 }
             } else {
-                // Integers *must* be ordered here, no matter what.
+                // We can unwrap safely because the vector is sorted upper.
                 let roaring = RoaringBitmap::from_sorted_iter(vec.into_iter()).unwrap();
                 roaring.serialize_into(buffer)?;
             }