From 41395412eb724db393ff546cb232b5ffd5a651a4 Mon Sep 17 00:00:00 2001
From: Ms2ger <ms2ger@gmail.com>
Date: Thu, 4 Dec 2014 09:43:40 +0100
Subject: [PATCH] Cleanup Document::GetDoctype.

---
 components/script/dom/document.rs | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/components/script/dom/document.rs b/components/script/dom/document.rs
index c3c71cb5101..e5ecf461a6c 100644
--- a/components/script/dom/document.rs
+++ b/components/script/dom/document.rs
@@ -520,12 +520,10 @@ impl<'a> DocumentMethods for JSRef<'a, Document> {
     // http://dom.spec.whatwg.org/#dom-document-doctype
     fn GetDoctype(self) -> Option<Temporary<DocumentType>> {
         let node: JSRef<Node> = NodeCast::from_ref(self);
-        node.children().find(|child| {
-            child.is_doctype()
-        }).map(|node| {
-            let doctype: JSRef<DocumentType> = DocumentTypeCast::to_ref(node).unwrap();
-            Temporary::from_rooted(doctype)
-        })
+        node.children()
+            .filter_map(DocumentTypeCast::to_ref)
+            .next()
+            .map(Temporary::from_rooted)
     }
 
     // http://dom.spec.whatwg.org/#dom-document-documentelement