[librsvg] cargo-clippy: gradient.rs - remove redundant mask

[Federico Mena Quintero <federico src gnome org>]

commit 3925cd1190599b53755d4838f47c4a9d224414cc
Author: Federico Mena Quintero <federico gnome org>
Date:   Thu Feb 22 13:30:29 2018 -0600

    cargo-clippy: gradient.rs - remove redundant mask

 rust/src/gradient.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/rust/src/gradient.rs b/rust/src/gradient.rs
index b94edf06..d62f76ba 100644
--- a/rust/src/gradient.rs
+++ b/rust/src/gradient.rs
@@ -318,7 +318,7 @@ impl Gradient {
                                              (f64::from((rgba >> 24) & 0xff)) / 255.0,
                                              (f64::from((rgba >> 16) & 0xff))  / 255.0,
                                              (f64::from((rgba >> 8) & 0xff))  / 255.0,
-                                             f64::from(((rgba >> 0) & 0xff) * u32::from(opacity)) / 255.0 / 
255.0);
+                                             f64::from((rgba & 0xff) * u32::from(opacity)) / 255.0 / 255.0);
             }
         }
     }