[vte] emulation: Make dispatch of SCORC symmetrical to SCOSC

[Christian Persch <chpe src gnome org>]

commit 86e1d0883b88d4899c9b398d9f0a1c51b9d86e8d
Author: Christian Persch <chpe src gnome org>
Date:   Sat Oct 6 23:08:28 2018 +0200

    emulation: Make dispatch of SCORC symmetrical to SCOSC
    
    Only dispatch either when DECLRMM is reset.

 src/vteseq.cc | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/vteseq.cc b/src/vteseq.cc
index 3e2bc946..196eb020 100644
--- a/src/vteseq.cc
+++ b/src/vteseq.cc
@@ -6740,6 +6740,9 @@ Terminal::SCORC(vte::parser::Sequence const& seq)
          * References: VT525
          */
 
+        if (m_modes_private.DECLRMM())
+                return;
+
         restore_cursor();
 }