[librsvg/fix-clippy-warnings: 2/2] Remove redundant clone

[Sven Neumann <sneumann src gnome org>]

commit 392bba52f64fc6249e8d3fe0dc515273f9285a9c
Author: Sven Neumann <sven svenfoo org>
Date:   Thu Oct 8 08:36:34 2020 +0200

    Remove redundant clone

 rsvg_internals/src/drawing_ctx.rs | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
---
diff --git a/rsvg_internals/src/drawing_ctx.rs b/rsvg_internals/src/drawing_ctx.rs
index 13e631a3..f6436995 100644
--- a/rsvg_internals/src/drawing_ctx.rs
+++ b/rsvg_internals/src/drawing_ctx.rs
@@ -170,9 +170,7 @@ pub fn draw_tree(
     acquired_nodes: &mut AcquiredNodes,
 ) -> Result<BoundingBox, RenderingError> {
     let (drawsub_stack, node) = match mode {
-        DrawingMode::LimitToStack { node, root } => {
-            (node.ancestors().map(|n| n.clone()).collect(), root)
-        }
+        DrawingMode::LimitToStack { node, root } => (node.ancestors().collect(), root),
 
         DrawingMode::OnlyNode(node) => (Vec::new(), node),
     };