[librsvg: 5/6] xml: use the descendants() iterato to set styles

[Federico Mena Quintero <federico src gnome org>]

commit 735dcc5b0a086eefc2b0db07c50218d2fc1d3eee
Author: Paolo Borelli <pborelli gnome org>
Date:   Sat Jun 29 22:05:33 2019 +0200

    xml: use the descendants() iterato to set styles
    
    No need anymore to do our own recursion. Note that the iterator
    includes the root node itself.

 rsvg_internals/src/xml.rs | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)
---
diff --git a/rsvg_internals/src/xml.rs b/rsvg_internals/src/xml.rs
index e2f24c6b..b6e55895 100644
--- a/rsvg_internals/src/xml.rs
+++ b/rsvg_internals/src/xml.rs
@@ -114,9 +114,12 @@ impl XmlState {
         match self.tree_root {
             None => Err(LoadingError::SvgHasNoElements),
             Some(ref root) if root.borrow().get_type() == NodeType::Svg => {
-                let mut root = self.tree_root.take().unwrap();
+                let root = self.tree_root.take().unwrap();
+                let css_rules = self.css_rules.as_ref().unwrap();
 
-                set_styles_recursively(&mut root, self.css_rules.as_ref().unwrap());
+                for mut node in root.descendants() {
+                    node.borrow_mut().set_style(css_rules);
+                }
 
                 Ok(Svg::new(
                     root,
@@ -520,14 +523,6 @@ fn skip_namespace(s: &str) -> &str {
     s.find(':').map_or(s, |pos| &s[pos + 1..])
 }
 
-fn set_styles_recursively(node: &mut RsvgNode, css_rules: &CssRules) {
-    node.borrow_mut().set_style(css_rules);
-
-    for mut child in node.children() {
-        set_styles_recursively(&mut child, css_rules);
-    }
-}
-
 // https://www.w3.org/TR/xml-stylesheet/
 //
 // The syntax for the xml-stylesheet processing instruction we support