[vte/wip/egmont/bidi: 66/79] don't stop extracting the paragraph contents at the end of the viewport

[Egmont Koblinger <egmontkob src gnome org>]

commit 1d04942ee166f90137822a7030fd1762a0932312
Author: Egmont Koblinger <egmont gmail com>
Date:   Thu Aug 30 21:40:14 2018 +0200

    don't stop extracting the paragraph contents at the end of the viewport

 src/bidi.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/bidi.cc b/src/bidi.cc
index a882d738..e5ecbec6 100644
--- a/src/bidi.cc
+++ b/src/bidi.cc
@@ -303,7 +303,7 @@ vte::grid::row_t RingView::paragraph(vte::grid::row_t row)
         FriBidiChar fribidi_chars[VTE_BIDI_PARAGRAPH_LENGTH_MAX * m_width];
 
         /* Extract the paragraph's contents, omitting unused and fragment cells. */
-        while (row < m_start + m_len) {
+        while (row < _vte_ring_next(m_ring)) {
                 row_data = m_ring->index(row);
                 if (row_data == nullptr)
                         break;