[evince] browser-plugin: manually destroy the search popover on toolbar dispose

[Carlos Garcia Campos <carlosgc src gnome org>]

commit df8b503552eb298f02c9903cb2f58806deae7351
Author: Carlos Garcia Campos <carlosgc gnome org>
Date:   Sun Mar 13 10:18:56 2016 +0100

    browser-plugin: manually destroy the search popover on toolbar dispose
    
    That way if it's still visible the closed signal will not be emited
    during destruction.

 browser-plugin/EvBrowserPluginToolbar.cpp |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/browser-plugin/EvBrowserPluginToolbar.cpp b/browser-plugin/EvBrowserPluginToolbar.cpp
index 824ab38..3f8c58f 100644
--- a/browser-plugin/EvBrowserPluginToolbar.cpp
+++ b/browser-plugin/EvBrowserPluginToolbar.cpp
@@ -456,11 +456,23 @@ static void evBrowserPluginToolbarConstructed(GObject *object)
         gtk_widget_show(toolItem);
 }
 
+static void evBrowserPluginToolbarDispose(GObject *object)
+{
+        EvBrowserPluginToolbar *toolbar = EV_BROWSER_PLUGIN_TOOLBAR(object);
+        if (toolbar->priv->searchPopover) {
+                gtk_widget_destroy(toolbar->priv->searchPopover);
+                toolbar->priv->searchPopover = nullptr;
+        }
+
+        G_OBJECT_CLASS(ev_browser_plugin_toolbar_parent_class)->dispose(object);
+}
+
 static void ev_browser_plugin_toolbar_class_init(EvBrowserPluginToolbarClass *klass)
 {
         GObjectClass *gObjectClass = G_OBJECT_CLASS(klass);
         gObjectClass->set_property = evBrowserPluginToolbarSetProperty;
         gObjectClass->constructed = evBrowserPluginToolbarConstructed;
+        gObjectClass->dispose = evBrowserPluginToolbarDispose;
 
         g_object_class_install_property(gObjectClass,
                                          PROP_PLUGIN,