[librsvg: 25/27] FilterContext.background_image does not need to be public

[Federico Mena Quintero <federico src gnome org>]

commit cf13c32e55fde138bb5393ae0827329d00b38b71
Author: Federico Mena Quintero <federico gnome org>
Date:   Fri Mar 5 16:37:39 2021 -0600

    FilterContext.background_image does not need to be public

 src/filters/context.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/filters/context.rs b/src/filters/context.rs
index 6321cedb..cfd457de 100644
--- a/src/filters/context.rs
+++ b/src/filters/context.rs
@@ -183,7 +183,7 @@ impl FilterContext {
     }
 
     /// Returns the surface corresponding to the background image snapshot.
-    pub fn background_image(
+    fn background_image(
         &self,
         draw_ctx: &DrawingCtx,
     ) -> Result<SharedImageSurface, FilterError> {