[librsvg] image: fix clippy warning

[Paolo Borelli <pborelli src gnome org>]

commit 373cf299c31c87239eab6b23b0c2371412f31730
Author: Paolo Borelli <pborelli gnome org>
Date:   Sat Apr 18 10:45:29 2020 +0200

    image: fix clippy warning

 rsvg_internals/src/filters/image.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/rsvg_internals/src/filters/image.rs b/rsvg_internals/src/filters/image.rs
index 88968030..586388de 100644
--- a/rsvg_internals/src/filters/image.rs
+++ b/rsvg_internals/src/filters/image.rs
@@ -121,7 +121,7 @@ impl SetAttributes for FeImage {
                 // "path" is used by some older Adobe Illustrator versions
                 expanded_name!(xlink "href") | expanded_name!("", "path") => {
                     let href = Href::parse(value)
-                        .map_err(|e| ValueErrorKind::from(e))
+                        .map_err(ValueErrorKind::from)
                         .attribute(attr)?;
 
                     self.href = Some(href);