[librsvg: 6/12] Path: extract a make_path_builder function

[Federico Mena Quintero <federico src gnome org>]

commit abfd8ace7dc9c54eddc9b8c23dc4e1b6815d449e
Author: Federico Mena Quintero <federico gnome org>
Date:   Tue Dec 10 10:20:17 2019 -0600

    Path: extract a make_path_builder function
    
    This one returns a Cow::Borrowed with the pre-parsed PathBuilder.

 rsvg_internals/src/shapes.rs | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)
---
diff --git a/rsvg_internals/src/shapes.rs b/rsvg_internals/src/shapes.rs
index f8fe03e1..16aba9fe 100644
--- a/rsvg_internals/src/shapes.rs
+++ b/rsvg_internals/src/shapes.rs
@@ -139,7 +139,18 @@ impl NodeTrait for Path {
         clipping: bool,
     ) -> Result<BoundingBox, RenderingError> {
         let values = cascaded.get();
-        render_path_builder(&self.builder, draw_ctx, node, values, true, clipping)
+        let builder = self.make_path_builder(values, draw_ctx);
+        render_path_builder(&builder, draw_ctx, node, values, true, clipping)
+    }
+}
+
+impl Path {
+    fn make_path_builder(
+        &self,
+        _values: &ComputedValues,
+        _draw_ctx: &mut DrawingCtx,
+    ) -> Cow<PathBuilder> {
+        Cow::Borrowed(&self.builder)
     }
 }