[gtk] gtk-demo: Minimally fix the sarch entry demo

[Matthias Clasen <matthiasc src gnome org>]

commit 8ceff2149768a5af1e35f54f39b338d9d8ecea21
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Mar 3 12:42:20 2019 -0500

    gtk-demo: Minimally fix the sarch entry demo
    
    This was broken by the entry refactoring.

 demos/gtk-demo/search_entry.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/demos/gtk-demo/search_entry.c b/demos/gtk-demo/search_entry.c
index 9b1f67d9a4..c234481052 100644
--- a/demos/gtk-demo/search_entry.c
+++ b/demos/gtk-demo/search_entry.c
@@ -246,7 +246,10 @@ do_search_entry (GtkWidget *do_widget)
       gtk_container_add (GTK_CONTAINER (vbox), hbox);
 
       /* Create our entry */
-      entry = gtk_search_entry_new ();
+      entry = gtk_entry_new ();
+      gtk_entry_set_icon_from_icon_name (GTK_ENTRY (entry),
+                                         GTK_ENTRY_ICON_PRIMARY,
+                                         "edit-find-symbolic");
       gtk_container_add (GTK_CONTAINER (hbox), entry);
 
       /* Create the find and cancel buttons */