[vte] widget: Fix condition to start scrolling down

[Christian Persch <chpe src gnome org>]

commit 48719e84812f18f16418498ce9c37f542a056b23
Author: Christian Persch <chpe gnome org>
Date:   Tue Dec 22 22:47:13 2015 +0100

    widget: Fix condition to start scrolling down
    
    This wasn't updated properly when introducing smooth scroll.

 src/vte.cc |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)
---
diff --git a/src/vte.cc b/src/vte.cc
index 58baca1..7383e12 100644
--- a/src/vte.cc
+++ b/src/vte.cc
@@ -7141,9 +7141,7 @@ VteTerminalPrivate::widget_motion_notify(GdkEventMotion *event)
                        extend_selection(x, y, false, false);
 
                        /* Start scrolling if we need to. */
-                       if (event->y < m_padding.top ||
-                           event->y >= m_row_count * m_char_height + m_padding.top)
-                       {
+                       if (y < 0 || y >= m_view_usable_extents.height()) {
                                /* Give mouse wigglers something. */
                                 stop_autoscroll();
                                autoscroll();