From 49f82ac4e37e34f1544138a523ce25125ae56453 Mon Sep 17 00:00:00 2001
From: Giteabot <teabot@gitea.io>
Date: Mon, 6 Nov 2023 17:22:44 +0800
Subject: [PATCH] Fix JS NPE when viewing specific range of PR commits (#27912)
 (#27923)

Backport #27912 by @delvh

This should be the easiest fix.
While other solutions might be possible that exterminate the root cause,
they will not be as trivial.

Co-authored-by: delvh <dev.lh@web.de>
---
 web_src/js/components/DiffCommitSelector.vue | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/web_src/js/components/DiffCommitSelector.vue b/web_src/js/components/DiffCommitSelector.vue
index 3f7100d20..439840c30 100644
--- a/web_src/js/components/DiffCommitSelector.vue
+++ b/web_src/js/components/DiffCommitSelector.vue
@@ -94,7 +94,7 @@ export default {
     focusElem(elem, prevElem) {
       if (elem) {
         elem.tabIndex = 0;
-        prevElem.tabIndex = -1;
+        if (prevElem) prevElem.tabIndex = -1;
         elem.focus();
       }
     },