[LyX/master] Fixup 051b6ce6: fix drawing of EndLabelString

[Jean-Marc Lasgouttes]

commit 8117172d8abc28c9ffb3b43746ce447e64e36208
Author: Jean-Marc Lasgouttes <lasgouttes at lyx.org>
Date:   Sun Feb 14 20:07:19 2021 +0100

    Fixup 051b6ce6: fix drawing of EndLabelString
    
    Fixes bug #12122.
---
 src/RowPainter.cpp |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/RowPainter.cpp b/src/RowPainter.cpp
index e378f43..99393ca 100644
--- a/src/RowPainter.cpp
+++ b/src/RowPainter.cpp
@@ -509,8 +509,8 @@ void RowPainter::paintLast() const
 		FontInfo const font = labelFont(true);
 		FontMetrics const & fm = theFontMetrics(font);
 		docstring const & str = par_.layout().endlabelstring();
-		double const x = row_.isRTL() ? x_ - fm.width(str) : x_;
-		pi_.pain.text(int(x), yo_, str, font);
+		double const x = row_.isRTL() ? row_.left_margin - fm.width(str) : row_.width();
+		pi_.pain.text(xo_ + x, yo_, str, font);
 		break;
 	}