Free gtk list. Should fix valgrind warning...

chrome/browser/app_modal_dialog_gtk.cc

 // Copyright (c) 2009 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/app_modal_dialog.h"
 
 #include <gtk/gtk.h>
 
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "chrome/browser/tab_contents/web_contents.h"
 #include "chrome/browser/tab_contents/tab_contents_view.h"
 #include "chrome/common/l10n_util.h"
 #include "chrome/common/message_box_flags.h"
 #include "grit/generated_resources.h"
 
 namespace {
 
 // If there's a text entry in the dialog, get the text from the first one and
 // return it.
 std::wstring GetPromptText(GtkDialog* dialog) {
+  std::wstring text;
   // TODO(tc): Replace with gtk_dialog_get_content_area() when using GTK 2.14+
   GtkWidget* contents_vbox = dialog->vbox;
   GList* first_child = gtk_container_get_children(GTK_CONTAINER(contents_vbox));
   for (GList* item = first_child; item; item = g_list_next(item)) {
     if (GTK_IS_ENTRY(item->data)) {
-      return UTF8ToWide(gtk_entry_get_text(GTK_ENTRY(item->data)));
+      text = UTF8ToWide(gtk_entry_get_text(GTK_ENTRY(item->data)));
     }
   }
-  return std::wstring();
+  g_list_free(first_child);
+  return text;
 }
 
 void OnDialogResponse(GtkDialog* dialog, gint response_id,
                       AppModalDialog* app_modal_dialog) {
   switch (response_id) {
     case GTK_RESPONSE_OK:
       // The first arg is the prompt text and the second is true if we want to
       // suppress additional popups from the page.
       app_modal_dialog->OnAccept(GetPromptText(dialog), false);
       break;
@@ skipping 99 matching lines @@
   }
 }
 
 void AppModalDialog::AcceptWindow() {
   OnDialogResponse(GTK_DIALOG(dialog_), GTK_RESPONSE_OK, this);
 }
 
 void AppModalDialog::CancelWindow() {
   OnDialogResponse(GTK_DIALOG(dialog_), GTK_RESPONSE_CANCEL, this);
 }