[librsvg] FeImage: preserve the Href error information

[Federico Mena Quintero <federico src gnome org>]

commit 7c61f66d8bfd4ec4a553b5f5aa28e7582e0afe60
Author: Federico Mena Quintero <federico gnome org>
Date:   Tue Jan 14 13:48:33 2020 -0600

    FeImage: preserve the Href error information

 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 c8cd471c..ca21b6b6 100644
--- a/rsvg_internals/src/filters/image.rs
+++ b/rsvg_internals/src/filters/image.rs
@@ -118,7 +118,7 @@ impl NodeTrait 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(|_| ValueErrorKind::parse_error("could not parse href"))
+                        .map_err(|e| ValueErrorKind::from(e))
                         .attribute(attr)?;
 
                     self.href = Some(href);