From f5a81ec4683613bd62624811733345d627f2127b Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Sat, 30 Jan 2021 18:19:21 +0300
Subject: Upgrade rowan

Notably, new rowan comes with support for mutable syntax trees.
---
 crates/ide/src/doc_links.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'crates/ide/src/doc_links.rs')

diff --git a/crates/ide/src/doc_links.rs b/crates/ide/src/doc_links.rs
index 7bdd3cca3..461e11060 100644
--- a/crates/ide/src/doc_links.rs
+++ b/crates/ide/src/doc_links.rs
@@ -279,7 +279,7 @@ pub(crate) fn external_docs(
     let token = pick_best(file.token_at_offset(position.offset))?;
     let token = sema.descend_into_macros(token);
 
-    let node = token.parent();
+    let node = token.parent()?;
     let definition = match_ast! {
         match node {
             ast::NameRef(name_ref) => NameRefClass::classify(&sema, &name_ref).map(|d| d.referenced(sema.db)),
-- 
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