[gtk+] GtkPopover: Restore tails

[Timm Bäder <baedert src gnome org>]

commit bd0f217ff47026b4af53a52d24c1ad5171dc13f3
Author: Timm Bäder <mail baedert org>
Date:   Tue Nov 24 11:37:00 2015 +0100

    GtkPopover: Restore tails
    
    The call to gtk_style_context_get_border was accidentally removed in
    2182fe7d9d6246e7acfe4e9ef0ca26c4a6893be6.

 gtk/gtkpopover.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkpopover.c b/gtk/gtkpopover.c
index 1df1554..0506c5a 100644
--- a/gtk/gtkpopover.c
+++ b/gtk/gtkpopover.c
@@ -677,6 +677,7 @@ gtk_popover_get_gap_coords (GtkPopover      *popover,
   gint border_radius;
   GtkStyleContext *context;
   GtkBorder margin, border;
+  GtkStateFlags state;
 
   gtk_popover_get_pointing_to (popover, &rect);
   gtk_widget_get_allocation (widget, &allocation);
@@ -708,9 +709,11 @@ gtk_popover_get_gap_coords (GtkPopover      *popover,
   rect.y += gtk_widget_get_margin_top (widget);
 
   context = gtk_widget_get_style_context (widget);
+  state = gtk_style_context_get_state (context);
 
+  gtk_style_context_get_border (context, state, &border);
   gtk_style_context_get (context,
-                         gtk_style_context_get_state (context),
+                         state,
                          GTK_STYLE_PROPERTY_BORDER_RADIUS, &border_radius,
                          NULL);
   pos = get_effective_position (popover, priv->final_position);