[evolution/gnome-3-20] Bug 767283 - "Add a Column" dialog: drag and drop broken on Wayland

[Milan Crha <mcrha src gnome org>]

commit 01104dc2dcc9b6a12b0309114fd6bbbe5cf843f3
Author: Milan Crha <mcrha redhat com>
Date:   Mon Jun 6 12:53:15 2016 +0200

    Bug 767283 - "Add a Column" dialog: drag and drop broken on Wayland

 e-util/e-table-header-item.c |   21 +++++++++++++++------
 1 files changed, 15 insertions(+), 6 deletions(-)
---
diff --git a/e-util/e-table-header-item.c b/e-util/e-table-header-item.c
index 8557f62..91c7430 100644
--- a/e-util/e-table-header-item.c
+++ b/e-util/e-table-header-item.c
@@ -714,20 +714,29 @@ ethi_drag_motion (GtkWidget *widget,
 {
        GtkAllocation allocation;
        GtkAdjustment *adjustment;
-       GList *targets;
+       GList *targets, *link;
        gdouble hadjustment_value;
        gdouble vadjustment_value;
-       gchar *droptype, *headertype;
+       gchar *headertype;
        guint direction = 0;
 
        gdk_drag_status (context, 0, time);
 
+       headertype = g_strdup_printf ("%s-%s", TARGET_ETABLE_COL_TYPE, ethi->dnd_code);
        targets = gdk_drag_context_list_targets (context);
-       droptype = gdk_atom_name (GDK_POINTER_TO_ATOM (targets->data));
-       headertype = g_strdup_printf (
-               "%s-%s", TARGET_ETABLE_COL_TYPE, ethi->dnd_code);
+       for (link = targets; link; link = g_list_next (link)) {
+               gchar *droptype;
 
-       if (strcmp (droptype, headertype) != 0) {
+               droptype = gdk_atom_name (GDK_POINTER_TO_ATOM (link->data));
+               if (g_strcmp0 (droptype, headertype) == 0) {
+                       g_free (droptype);
+                       break;
+               }
+
+               g_free (droptype);
+       }
+
+       if (!link) {
                g_free (headertype);
                return FALSE;
        }