From 8e2ea5d84218e7c673275919be7c14f8da9c8331 Mon Sep 17 00:00:00 2001
From: Tobias Predel <tobias.predel@gmail.com>
Date: Mon, 4 Nov 2024 21:55:06 +0100
Subject: [PATCH] Do not use invalid iterators (#749)

---
 src/document.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/document.h b/src/document.h
index 8205e26d..80ed0efb 100644
--- a/src/document.h
+++ b/src/document.h
@@ -507,7 +507,8 @@ struct Document {
             if (drawroot->grid && drawroot->grid->folded)
                 SetSelect(drawroot->parent->grid->FindCell(drawroot));
         }
-        while (len < drawpath.size()) drawpath.erase(drawpath.begin());
+        if (auto diff = drawpath.size() - len)
+            drawpath.erase(drawpath.begin(), drawpath.begin() + diff);
     }
 
     void Zoom(int dir, wxDC &dc, bool fromroot = false) {