[vte] widget: Fix URL recognition after dragging the scrollbar

[Egmont Koblinger <egmontkob src gnome org>]

commit cfd75ab69f221259e1c15a6b6957a88ef5b91ebc
Author: Egmont Koblinger <egmont gmail com>
Date:   Mon Nov 26 00:21:57 2018 +0100

    widget: Fix URL recognition after dragging the scrollbar
    
    https://gitlab.gnome.org/GNOME/vte/issues/74

 src/vte.cc | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/vte.cc b/src/vte.cc
index 5169e57e..d30aaf73 100644
--- a/src/vte.cc
+++ b/src/vte.cc
@@ -7604,6 +7604,7 @@ Terminal::vadjustment_value_changed()
                _vte_debug_print(VTE_DEBUG_ADJ,
                            "Scrolling by %f\n", dy);
                 invalidate_all();
+                match_contents_clear();
                emit_text_scrolled(dy);
                queue_contents_changed();
        } else {