servo: Merge #19558 - selectors: Manually inline any(..) in matches_selector_list (from emilio:sadness); r=heycam

Since the compiler refuses to inline the inner closure even with -O3, which is
sad :(.

Sad try run:

  https://treeherder.mozilla.org/perf.html#/compare?originalProject=try&originalRevision=c2724c47e98f990826327da05220cd83b772d144&newProject=try&newRevision=52ac88b40a08a5ef6a629bd681f2e5a444b75f54&framework=1

Source-Repo: https://github.com/servo/servo
Source-Revision: 370f5acf6dcf2fa2b4755105376302b41a88fed3

--HG--
extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear
extra : subtree_revision : c9111fe877a9e1d7893c91f13be33fded64acbe9

servo/components/selectors/matching.rs

@@ -72,14 +72,24 @@ pub fn matches_selector_list<E>(
 where
     E: Element
 {
-    selector_list.0.iter().any(|selector| {
-        matches_selector(selector,
-                         0,
-                         None,
-                         element,
-                         context,
-                         &mut |_, _| {})
-    })
+    // This is pretty much any(..) but manually inlined because the compiler
+    // refuses to do so from querySelector / querySelectorAll.
+    for selector in &selector_list.0 {
+        let matches = matches_selector(
+            selector,
+            0,
+            None,
+            element,
+            context,
+            &mut |_, _| {},
+        );
+
+        if matches {
+            return true;
+        }
+    }
+
+    false
 }
 
 #[inline(always)]