Wrapper: fix bug in AtkWindow
Wrapper: fix bug in AtkWindow

Bug: https://bugzilla.gnome.org/show_bug.cgi?id=751159

GNOME/java-atk-wrapper,GNOME/java-atk-wrapper,thisMagpie/java-atk-wrapper,thisMagpie/java-atk-wrapper,GNOME/java-atk-wrapper,thisMagpie/java-atk-wrapper