[librsvg: 12/14] DrawingCtx::set_gradient can't fail, so don't return a Result

[Federico Mena Quintero <federico src gnome org>]

commit 3507762ef651a13dabf38e87e1e014dcc0debe7a
Author: Federico Mena Quintero <federico gnome org>
Date:   Tue Mar 23 13:34:40 2021 -0600

    DrawingCtx::set_gradient can't fail, so don't return a Result
    
    It turns out that gradients are resolved to the fallback color within
    PaintServer::resolve(); maybe we should remove the fallback color from
    UserSpacePaintSource, but that needs tests first.

 src/drawing_ctx.rs | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)
---
diff --git a/src/drawing_ctx.rs b/src/drawing_ctx.rs
index 0526b7c6..75d989c9 100644
--- a/src/drawing_ctx.rs
+++ b/src/drawing_ctx.rs
@@ -981,7 +981,7 @@ impl DrawingCtx {
     fn set_gradient(
         self: &mut DrawingCtx,
         gradient: &UserSpaceGradient,
-    ) -> Result<bool, RenderingError> {
+    ) {
         let g = match gradient.variant {
             GradientVariant::Linear { x1, y1, x2, y2 } => {
                 cairo::Gradient::clone(&cairo::LinearGradient::new(x1, y1, x2, y2))
@@ -1014,8 +1014,6 @@ impl DrawingCtx {
 
         let cr = self.cr.clone();
         cr.set_source(&g);
-
-        Ok(true)
     }
 
     fn set_pattern(
@@ -1113,15 +1111,9 @@ impl DrawingCtx {
         acquired_nodes: &mut AcquiredNodes<'_>,
     ) -> Result<bool, RenderingError> {
         match *paint_source {
-            UserSpacePaintSource::Gradient(ref gradient, c) => {
-                if self.set_gradient(gradient)? {
-                    Ok(true)
-                } else if let Some(c) = c {
-                    self.set_color(c);
-                    Ok(true)
-                } else {
-                    Ok(false)
-                }
+            UserSpacePaintSource::Gradient(ref gradient, _c) => {
+                self.set_gradient(gradient);
+                Ok(true)
             }
             UserSpacePaintSource::Pattern(ref pattern, c) => {
                 if self.set_pattern(pattern, acquired_nodes)? {