Apply suggestion from @gballet

Co-authored-by: Guillaume Ballet <3272758+gballet@users.noreply.github.com>

trie/trie.go

@@ -518,7 +518,7 @@ func (t *Trie) delete(n node, prefix, key []byte) (bool, node, error) {
 			// always creates a new slice) instead of append to
 			// avoid modifying n.Key since it might be shared with
 			// other nodes.
-			return true, &shortNode{slices.Concat(n.Key, child.Key...), child.Val, t.newFlag()}, nil
+			return true, &shortNode{slices.Concat(n.Key, child.Key), child.Val, t.newFlag()}, nil
 		default:
 			return true, &shortNode{n.Key, child, t.newFlag()}, nil
 		}