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

1 files changed, 6 insertions, 9 deletions

diff --git a/components/script/dom/htmliframeelement.rs b/components/script/dom/htmliframeelement.rs
index 35cc68c3da5..1bd9071be01 100644
--- a/components/script/dom/htmliframeelement.rs
+++ b/components/script/dom/htmliframeelement.rs
@@ -203,9 +203,8 @@ impl<'a> VirtualMethods for JSRef<'a, HTMLIFrameElement> {
     }
 
     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);
         }
 
         match attr.local_name() {
@@ -244,9 +243,8 @@ impl<'a> VirtualMethods for JSRef<'a, HTMLIFrameElement> {
     }
 
     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);
         }
 
         match attr.local_name() {
@@ -256,9 +254,8 @@ impl<'a> VirtualMethods for JSRef<'a, HTMLIFrameElement> {
     }
 
     fn bind_to_tree(&self, tree_in_doc: bool) {
-        match self.super_type() {
-            Some(ref s) => s.bind_to_tree(tree_in_doc),
-            _ => (),
+        if let Some(ref s) = self.super_type() {
+            s.bind_to_tree(tree_in_doc);
         }
 
         if tree_in_doc {