[librsvg: 5/22] gradient: really make resolve_from_defaults() immutable

[Federico Mena Quintero <federico src gnome org>]

commit 8b0d6f9db4adf28f7f204c5c3f38a28f1b88c1f4
Author: Federico Mena Quintero <federico gnome org>
Date:   Tue Oct 1 11:31:33 2019 -0500

    gradient: really make resolve_from_defaults() immutable

 rsvg_internals/src/gradient.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/rsvg_internals/src/gradient.rs b/rsvg_internals/src/gradient.rs
index a7d342a1..5bd501ec 100644
--- a/rsvg_internals/src/gradient.rs
+++ b/rsvg_internals/src/gradient.rs
@@ -257,7 +257,7 @@ impl UnresolvedVariant {
 
     // https://www.w3.org/TR/SVG/pservers.html#LinearGradients
     // https://www.w3.org/TR/SVG/pservers.html#RadialGradients
-    fn resolve_from_defaults(self) -> UnresolvedVariant {
+    fn resolve_from_defaults(&self) -> UnresolvedVariant {
         match self {
             UnresolvedVariant::Linear { x1, y1, x2, y2 } => UnresolvedVariant::Linear {
                 x1: x1.or_else(|| Some(LengthHorizontal::parse_str("0%").unwrap())),
@@ -487,7 +487,7 @@ impl UnresolvedGradient {
         UnresolvedGradient { units, affine, spread, stops, variant }
     }
 
-    fn resolve_from_defaults(self) -> UnresolvedGradient {
+    fn resolve_from_defaults(&self) -> UnresolvedGradient {
         let units = self.units.or(Some(GradientUnits::default()));
         let affine = self.affine.or(Some(cairo::Matrix::identity()));
         let spread = self.spread.or(Some(SpreadMethod::default()));