[LyX/master] Replace removed signal

[Juergen Spitzmueller]

commit 75f628aec062fe13349048ac8fc081e912e21d0c
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Fri May 12 09:46:38 2023 +0200

    Replace removed signal
    
    The used one has been removed from Qt6
---
 src/frontends/qt/GuiSpellchecker.cpp |    3 ++-
 src/frontends/qt/GuiSpellchecker.h   |    2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/frontends/qt/GuiSpellchecker.cpp b/src/frontends/qt/GuiSpellchecker.cpp
index 8adf132..d58f435 100644
--- a/src/frontends/qt/GuiSpellchecker.cpp
+++ b/src/frontends/qt/GuiSpellchecker.cpp
@@ -192,8 +192,9 @@ void SpellcheckerWidget::on_suggestionsLW_itemClicked(QListWidgetItem * item)
 }
 
 
-void SpellcheckerWidget::on_replaceCO_highlighted(const QString & str)
+void SpellcheckerWidget::on_replaceCO_highlighted(int index)
 {
+	QString const str = d->ui.replaceCO->itemText(index);
 	QListWidget * lw = d->ui.suggestionsLW;
 	if (lw->currentItem() && lw->currentItem()->text() == str)
 		return;
diff --git a/src/frontends/qt/GuiSpellchecker.h b/src/frontends/qt/GuiSpellchecker.h
index dd60eed..6b9682e 100644
--- a/src/frontends/qt/GuiSpellchecker.h
+++ b/src/frontends/qt/GuiSpellchecker.h
@@ -39,7 +39,7 @@ public:
 private Q_SLOTS:
 	void on_replaceAllPB_clicked();
 	void on_suggestionsLW_itemClicked(QListWidgetItem *);
-	void on_replaceCO_highlighted(const QString & str);
+	void on_replaceCO_highlighted(int index);
 	void on_languageCO_activated(int index);
 	void on_ignoreAllPB_clicked();
 	void on_skipAllPB_clicked();