From b5364e8825e41af574256f1c3cb01b28219c5b75 Mon Sep 17 00:00:00 2001
From: Dimitri van Heesch <doxygen@gmail.com>
Date: Sat, 23 Jan 2021 13:23:11 +0100
Subject: Regression: fixed potential crash in ftvhelp.cpp

- Found while running doxygen on the gmic project
- Cause: vector.back() was called on an empty vector
---
 src/ftvhelp.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/ftvhelp.cpp b/src/ftvhelp.cpp
index 3bcf2c6..f411a60 100644
--- a/src/ftvhelp.cpp
+++ b/src/ftvhelp.cpp
@@ -185,9 +185,9 @@ void FTVHelp::decContentsDepth()
   {
     m_indent--;
     std::vector<FTVNode*> &nl = m_indentNodes[m_indent];
-    FTVNode *parent = nl.back();
-    if (parent)
+    if (!nl.empty())
     {
+      FTVNode *parent = nl.back();
       std::vector<FTVNode*> &children = m_indentNodes[m_indent+1];
       for (const auto &child : children)
       {
-- 
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