[LyX/master] Fix crash when inserting label before label in change tracking mode

[Juergen Spitzmueller]

commit 4d337e78ab3c31e8b1febdce75879c6124bcc21b
Author: Juergen Spitzmueller <sp...@lyx.org>
Date:   Mon Dec 5 11:15:58 2022 +0100

    Fix crash when inserting label before label in change tracking mode
---
 src/insets/InsetLabel.cpp |    9 +++++----
 src/insets/InsetLabel.h   |    2 +-
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/insets/InsetLabel.cpp b/src/insets/InsetLabel.cpp
index 2c0c1e5..e143f83 100644
--- a/src/insets/InsetLabel.cpp
+++ b/src/insets/InsetLabel.cpp
@@ -99,7 +99,8 @@ void InsetLabel::updateLabelAndRefs(docstring const & 
new_label,
        UndoGroupHelper ugh(&buffer());
        if (cursor)
                cursor->recordUndo();
-       if (buffer().masterParams().track_changes) {
+       bool const changes = buffer().masterParams().track_changes;
+       if (changes) {
                // With change tracking, we insert a new label and
                // delete the old one
                InsetCommandParams p(LABEL_CODE, "label");
@@ -109,15 +110,15 @@ void InsetLabel::updateLabelAndRefs(docstring const & 
new_label,
                lyx::dispatch(FuncRequest(LFUN_CHAR_DELETE_FORWARD));
        } else
                setParam("name", label);
-       updateReferences(old_label, label);
+       updateReferences(old_label, label, changes);
 }
 
 
 void InsetLabel::updateReferences(docstring const & old_label,
-               docstring const & new_label)
+               docstring const & new_label, bool const changes)
 {
        UndoGroupHelper ugh(nullptr);
-       if (buffer().masterParams().track_changes) {
+       if (changes) {
                // With change tracking, we insert a new ref and
                // delete the old one
                lyx::dispatch(FuncRequest(LFUN_MASTER_BUFFER_FORALL,
diff --git a/src/insets/InsetLabel.h b/src/insets/InsetLabel.h
index dba25f0..8032ce7 100644
--- a/src/insets/InsetLabel.h
+++ b/src/insets/InsetLabel.h
@@ -98,7 +98,7 @@ private:
        void uniqueLabel(docstring & label) const;
        ///
        void updateReferences(docstring const & old_label,
-               docstring const & new_label);
+               docstring const & new_label, bool const changes);
        ///
        docstring screen_label_;
        ///
-- 
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