[librsvg: 18/38] Handle::create_drawing_ctx_for_node(): Take a &self, not &mut self

[Federico Mena Quintero <federico src gnome org>]

commit 50dce146cc4ae78c24b01ccecac18e076235df57
Author: Federico Mena Quintero <federico gnome org>
Date:   Wed Jan 23 11:13:43 2019 -0600

    Handle::create_drawing_ctx_for_node(): Take a &self, not &mut self

 rsvg_internals/src/handle.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/rsvg_internals/src/handle.rs b/rsvg_internals/src/handle.rs
index 28cbf38b..00695dbd 100644
--- a/rsvg_internals/src/handle.rs
+++ b/rsvg_internals/src/handle.rs
@@ -313,7 +313,7 @@ impl Handle {
     }
 
     fn create_drawing_ctx_for_node(
-        &mut self,
+        &self,
         cr: &cairo::Context,
         dimensions: &RsvgDimensionData,
         node: Option<&RsvgNode>,