[vte] emulation: Fix Tab not to alter the background color

[Egmont Koblinger <egmontkob src gnome org>]

commit f5452acf78a105466157a540beadd5dd2ced9efc
Author: Egmont Koblinger <egmont gmail com>
Date:   Wed Apr 6 10:54:02 2016 +0200

    emulation: Fix Tab not to alter the background color
    
    https://bugzilla.gnome.org/show_bug.cgi?id=764330

 src/vteseq.cc |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/vteseq.cc b/src/vteseq.cc
index 1a64602..5c22b29 100644
--- a/src/vteseq.cc
+++ b/src/vteseq.cc
@@ -1925,7 +1925,7 @@ VteTerminalPrivate::seq_tab()
                 */
 
                old_len = _vte_row_data_length (rowdata);
-                _vte_row_data_fill (rowdata, &m_fill_defaults, newcol);
+                _vte_row_data_fill (rowdata, &basic_cell.cell, newcol);
 
                /* Insert smart tab if there's nothing in the line after
                 * us.  Though, there may be empty cells (with non-default