[gtk+/gtk-2-24] Sync missing comment

[Federico Mena Quintero <federico src gnome org>]

commit c1f8305622c8c2a8f040a89cec50c64a9d573dd6
Author: Federico Mena Quintero <federico gnome org>
Date:   Tue Mar 8 21:30:20 2016 -0600

    Sync missing comment

 gtk/gtkfilechooserentry.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkfilechooserentry.c b/gtk/gtkfilechooserentry.c
index 2713bb0..d62866f 100644
--- a/gtk/gtkfilechooserentry.c
+++ b/gtk/gtkfilechooserentry.c
@@ -421,6 +421,8 @@ gtk_file_chooser_entry_tab_handler (GtkWidget *widget,
       (state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
     return FALSE;
 
+  /* This is a bit evil -- it makes Tab never leave the entry. It basically
+   * makes it 'safe' for people to hit. */
   gtk_editable_get_selection_bounds (editable, &start, &end);
       
   if (start != end)