`Document::is_modified` should not check if path is set

If there is a new document we still want to know if there are unsaved changes

helix-view/src/document.rs

@@ -462,8 +462,7 @@ impl Document {
         let history = self.history.take();
         let current_revision = history.current_revision();
         self.history.set(history);
-        self.path.is_some()
+        current_revision != self.last_saved_revision || !self.changes.is_empty()
-            && (current_revision != self.last_saved_revision || !self.changes.is_empty())
     }
 
     #[inline]