[LyX/master] Use real minus char

[Juergen Spitzmueller]

commit f2e33b8c3e63fba3188c913ccf915011d1f205d2
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Tue Mar 9 10:10:48 2021 +0100

    Use real minus char
---
 src/frontends/qt/GuiView.cpp |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/frontends/qt/GuiView.cpp b/src/frontends/qt/GuiView.cpp
index 1db9bbb..3fafd20 100644
--- a/src/frontends/qt/GuiView.cpp
+++ b/src/frontends/qt/GuiView.cpp
@@ -657,7 +657,7 @@ GuiView::GuiView(int id)
 	zoom_in_->setFlat(true);
 	zoom_in_->setFixedSize(QSize(fm.height(), fm.height()));
 	zoom_out_ = new QPushButton(statusBar());
-	zoom_out_->setText("-");
+	zoom_out_->setText(QString(0x2212));
 	zoom_out_->setFixedSize(QSize(fm.height(), fm.height()));
 	zoom_out_->setFlat(true);