search: Remove intermediate allocation (#45633)

Release Notes:

- N/A

---------

Signed-off-by: Marco Mihai Condrache <52580954+marcocondrache@users.noreply.github.com>

crates/search/src/project_search.rs

@@ -1531,14 +1531,20 @@ impl ProjectSearchView {
 
     fn update_match_index(&mut self, cx: &mut Context<Self>) {
         let results_editor = self.results_editor.read(cx);
-        let match_ranges = self.entity.read(cx).match_ranges.clone();
-        let new_index = active_match_index(
-            Direction::Next,
-            &match_ranges,
-            &results_editor.selections.newest_anchor().head(),
-            &results_editor.buffer().read(cx).snapshot(cx),
-        );
-        self.highlight_matches(&match_ranges, new_index, cx);
+        let newest_anchor = results_editor.selections.newest_anchor().head();
+        let buffer_snapshot = results_editor.buffer().read(cx).snapshot(cx);
+        let new_index = self.entity.update(cx, |this, cx| {
+            let new_index = active_match_index(
+                Direction::Next,
+                &this.match_ranges,
+                &newest_anchor,
+                &buffer_snapshot,
+            );
+
+            self.highlight_matches(&this.match_ranges, new_index, cx);
+            new_index
+        });
+
         if self.active_match_index != new_index {
             self.active_match_index = new_index;
             cx.notify();
@@ -1550,7 +1556,7 @@ impl ProjectSearchView {
         &self,
         match_ranges: &[Range<Anchor>],
         active_index: Option<usize>,
-        cx: &mut Context<Self>,
+        cx: &mut App,
     ) {
         self.results_editor.update(cx, |editor, cx| {
             editor.highlight_background::<Self>(