[librsvg: 7/38] Use unreachable!() for invalid property IDs

[Federico Mena Quintero <federico src gnome org>]

commit 6e679ae4bf79cd5e0e225d0eb5ee81c5cfd45488
Author: Federico Mena Quintero <federico gnome org>
Date:   Thu Jan 17 08:39:18 2019 -0600

    Use unreachable!() for invalid property IDs

 rsvg_internals/src/c_api.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/rsvg_internals/src/c_api.rs b/rsvg_internals/src/c_api.rs
index 23ce1fb9..8345ff7e 100644
--- a/rsvg_internals/src/c_api.rs
+++ b/rsvg_internals/src/c_api.rs
@@ -182,7 +182,7 @@ impl ObjectImpl for Handle {
                 self.set_base_url(value.get().expect("base-uri should be a non-NULL string"));
             }
 
-            _ => unimplemented!("invalid property id {}", id),
+            _ => unreachable!("invalid property id {}", id),
         }
     }