Free gtk list. Should fix valgrind warning...

chrome/browser/app_modal_dialog_gtk.cc

Index: chrome/browser/app_modal_dialog_gtk.cc
===================================================================
--- chrome/browser/app_modal_dialog_gtk.cc	(revision 14819)
+++ chrome/browser/app_modal_dialog_gtk.cc	(working copy)
@@ -19,15 +19,17 @@
 // 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,