[librsvg: 56/90] clip_to_node() - don't consume the node reference

[Federico Mena Quintero <federico src gnome org>]

commit f133df90468cda17313d0158a2f364312bea76f2
Author: Federico Mena Quintero <federico gnome org>
Date:   Wed Mar 20 09:56:58 2019 -0600

    clip_to_node() - don't consume the node reference

 rsvg_internals/src/drawing_ctx.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/rsvg_internals/src/drawing_ctx.rs b/rsvg_internals/src/drawing_ctx.rs
index 0a78a965..4a947aff 100644
--- a/rsvg_internals/src/drawing_ctx.rs
+++ b/rsvg_internals/src/drawing_ctx.rs
@@ -404,7 +404,7 @@ impl DrawingCtx {
 
     fn clip_to_node(
         &mut self,
-        clip_node: Option<RsvgNode>,
+        clip_node: &Option<RsvgNode>,
     ) -> Result<(), RenderingError> {
         if let Some(clip_node) = clip_node {
             let orig_bbox = self.bbox;
@@ -454,7 +454,7 @@ impl DrawingCtx {
                 let (clip_in_user_space, clip_in_object_space) =
                     dc.get_clip_in_user_and_object_space(clip_uri);
 
-                dc.clip_to_node(clip_in_user_space)?;
+                dc.clip_to_node(&clip_in_user_space)?;
 
                 let needs_temporary_surface = !(opacity == 1.0
                     && filter.is_none()
@@ -503,6 +503,7 @@ impl DrawingCtx {
                     dc.cr.set_matrix(untransformed);
 //                    dc.cr.set_matrix(affine);
                     dc.clip_to_node(clip_in_object_space)?;
+                    dc.clip_to_node(&clip_in_object_space)?;
 
                     if let Some(mask) = mask {
                         if let Some(acquired) =