Upgrade rowan

Notably, new rowan comes with support for mutable syntax trees.

1 files changed, 1 insertions, 1 deletions

diff --git a/crates/ide_ssr/src/resolving.rs b/crates/ide_ssr/src/resolving.rs
index af94c7bb1..dc7835473 100644
--- a/crates/ide_ssr/src/resolving.rs
+++ b/crates/ide_ssr/src/resolving.rs
@@ -195,7 +195,7 @@ impl<'db> ResolutionScope<'db> {
             .syntax()
             .token_at_offset(resolve_context.offset)
             .left_biased()
-            .map(|token| token.parent())
+            .and_then(|token| token.parent())
             .unwrap_or_else(|| file.syntax().clone());
         let node = pick_node_for_resolution(node);
         let scope = sema.scope(&node);