[gnome-flashback] desktop: fix grid point position

[Alberts Muktupāvels <muktupavels src gnome org>]

commit e55eaed25d9763de9769918b1c2d363d55d01bc6
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Wed Nov 13 21:29:17 2019 +0200

    desktop: fix grid point position

 gnome-flashback/libdesktop/gf-monitor-view.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gnome-flashback/libdesktop/gf-monitor-view.c b/gnome-flashback/libdesktop/gf-monitor-view.c
index efab104..74a2c06 100644
--- a/gnome-flashback/libdesktop/gf-monitor-view.c
+++ b/gnome-flashback/libdesktop/gf-monitor-view.c
@@ -317,8 +317,8 @@ gf_monitor_view_draw (GtkWidget *widget,
               int x;
               int y;
 
-              x = self->offset_x + c * self->spacing_x + self->spacing_x / 2;
-              y = self->offset_y + r * self->spacing_y + self->spacing_y / 2;
+              x = self->offset_x + c * self->spacing_x + self->icon_width / 2;
+              y = self->offset_y + r * self->spacing_y + self->icon_height / 2;
 
               cairo_move_to (cr, x - 3, y);
               cairo_line_to (cr, x + 3, y);