Use new `if let` syntax wherever possible. Fixes #4153.

1 files changed, 4 insertions, 6 deletions

diff --git a/components/script/dom/htmlcanvaselement.rs b/components/script/dom/htmlcanvaselement.rs
index c3ea7fe6cb1..220e81bae51 100644
--- a/components/script/dom/htmlcanvaselement.rs
+++ b/components/script/dom/htmlcanvaselement.rs
@@ -132,9 +132,8 @@ impl<'a> VirtualMethods for JSRef<'a, HTMLCanvasElement> {
     }
 
     fn before_remove_attr(&self, attr: JSRef<Attr>) {
-        match self.super_type() {
-            Some(ref s) => s.before_remove_attr(attr),
-            _ => ()
+        if let Some(ref s) = self.super_type() {
+            s.before_remove_attr(attr);
         }
 
         let recreate = match attr.local_name() {
@@ -159,9 +158,8 @@ impl<'a> VirtualMethods for JSRef<'a, HTMLCanvasElement> {
     }
 
     fn after_set_attr(&self, attr: JSRef<Attr>) {
-        match self.super_type() {
-            Some(ref s) => s.after_set_attr(attr),
-            _ => ()
+        if let Some(ref s) = self.super_type() {
+            s.after_set_attr(attr);
         }
 
         let value = attr.value();