Don't assume that the excerpt can be found (#27395)

Release Notes: - Fix (rare) panic in the project diff view
2025-03-24 16:12:26 -06:00
parent 10c04afc81
commit 46d67a33c7
1 changed files with 5 additions and 1 deletions
@@ -1645,7 +1645,11 @@ impl MultiBuffer {
            };
            let locator = snapshot.excerpt_locator_for_id(*existing);
            excerpts_cursor.seek_forward(&Some(locator), Bias::Left, &());
-            let existing_excerpt = excerpts_cursor.item().unwrap();
+            let Some(existing_excerpt) = excerpts_cursor.item() else {
+                to_remove.push(existing_iter.next().unwrap());
+                to_insert.push(new_iter.next().unwrap());
+                continue;
+            };
            if existing_excerpt.buffer_id != buffer_snapshot.remote_id() {
                to_remove.push(existing_iter.next().unwrap());
                to_insert.push(new_iter.next().unwrap());