Fix a selection clipboard leak.

chrome/browser/renderer_host/render_widget_host_view_gtk.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/renderer_host/render_widget_host_view_gtk.h"
 
 #include <gtk/gtk.h>
 #include <gdk/gdk.h>
 #include <gdk/gdkx.h>
 #include <cairo/cairo.h>
@@ skipping 48 matching lines @@
                      G_CALLBACK(MouseScrollEvent), host_view);
 
     GtkTargetList* target_list = gtk_target_list_new(NULL, 0);
     gtk_target_list_add_text_targets(target_list, 0);
     gint num_targets = 0;
     GtkTargetEntry* targets = gtk_target_table_new_from_list(target_list,
                                                             &num_targets);
     gtk_selection_clear_targets(widget, GDK_SELECTION_PRIMARY);
     gtk_selection_add_targets(widget, GDK_SELECTION_PRIMARY, targets,
                               num_targets);
+    gtk_target_list_unref(target_list);
     gtk_target_table_free(targets, num_targets);
 
     // When X requests the contents of the clipboard, GTK will emit the
     // selection_request_event signal. The default handler would then
     // synchronously emit the selection_get signal. However, we want to
     // respond to the selection_request_event asynchronously, so we intercept
     // the signal in OnSelectionRequest, request the selection text from the
     // render view, and return TRUE so the default handler won't be called. Then
     // when we get the selection text back from the renderer in
     // SetSelectionText() we will call manually the selection_request_event
@@ skipping 387 matching lines @@
   host_->Send(new ViewMsg_RequestSelectionText(host_->routing_id()));
 }
 
 void RenderWidgetHostViewGtk::ReceivedSelectionText(GtkClipboard* clipboard,
     const gchar* text, gpointer userdata) {
   RenderWidgetHostViewGtk* host_view =
       reinterpret_cast<RenderWidgetHostViewGtk*>(userdata);
   host_view->host_->Send(new ViewMsg_InsertText(host_view->host_->routing_id(),
                                                 UTF8ToUTF16(text)));
 }