[LyX/master] Fix commit 32edb659

[Jean-Marc Lasgouttes]

commit f7e639c8189144333485bfe07aeb6b95c7530f53
Author: Jean-Marc Lasgouttes <lasgout...@lyx.org>
Date:   Mon Oct 26 11:38:01 2015 +0100

    Fix commit 32edb659
    
    A bad test meant an embarassing red line on the left.
    
    This is still bug #9807.

diff --git a/src/TextMetrics.cpp b/src/TextMetrics.cpp
index 73bd4f8..2ec798f 100644
--- a/src/TextMetrics.cpp
+++ b/src/TextMetrics.cpp
@@ -1956,7 +1956,7 @@ void TextMetrics::drawParagraph(PainterInfo & pi, 
pit_type const pit, int const
                        rp.paintLast();
                if (i == 0 && is_rtl)
                        rp.paintFirst();
-               rp.paintTooLargeMarks(row_x < row.left_x(),
+               rp.paintTooLargeMarks(row_x + row.left_x() < 0,
                                      row_x + row.right_x() > bv_->workWidth());
                y += row.descent();