From 6cb2e332e11f7a1c95d7a0992c74bf136c74236c Mon Sep 17 00:00:00 2001
From: Raphael Coeffic <raphael.coeffic@frafos.com>
Date: Wed, 11 May 2022 11:34:01 +0200
Subject: [PATCH] fix: check `first` before derefering it

---
 radio/src/thirdparty/libopenui/src/form.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/radio/src/thirdparty/libopenui/src/form.cpp b/radio/src/thirdparty/libopenui/src/form.cpp
index 5a56589ac..e2d8f2de5 100644
--- a/radio/src/thirdparty/libopenui/src/form.cpp
+++ b/radio/src/thirdparty/libopenui/src/form.cpp
@@ -312,7 +312,8 @@ void FormGroup::setFocus(uint8_t flag, Window * from)
       case SET_FOCUS_FORWARD:
         if (from && from->isChild(this)) {
           if (next == this) {
-            first->setFocus(SET_FOCUS_FORWARD, this);
+            if (first)
+              first->setFocus(SET_FOCUS_FORWARD, this);
           }
           else if (next) {
             next->setFocus(SET_FOCUS_FORWARD, this);