[gimp/samm/gimp-2-10-print-focus] Add comment

[Alex Samorukov <asamorukov src gnome org>]

commit 90f9250f21590b29e512ce9e241f52ebee9e835a
Author: Alex Samorukov <samm net-art cz>
Date:   Tue Jan 14 21:31:27 2020 +0000

    Add comment

 plug-ins/print/print.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/plug-ins/print/print.c b/plug-ins/print/print.c
index 2e12aee798..89cd5e27f8 100644
--- a/plug-ins/print/print.c
+++ b/plug-ins/print/print.c
@@ -264,6 +264,7 @@ print_image (gint32     image_ID,
     {
       gimp_ui_init (PLUG_IN_BINARY, FALSE);
 #ifdef GDK_WINDOWING_QUARTZ
+      /* create top level window and make it transient to use correct monitor */
       GtkWidget * printwindow = gtk_window_new(GTK_WINDOW_TOPLEVEL);
       gimp_window_set_transient (GTK_WINDOW (printwindow));
       gtk_widget_show(printwindow);