Fix JSONElement::array_* not resetting m_at
Fix JSONElement::array_* not resetting m_at

taylor001/crown,mikymod/crown,galek/crown,galek/crown,taylor001/crown,mikymod/crown,galek/crown,dbartolini/crown,taylor001/crown,dbartolini/crown,galek/crown,mikymod/crown,dbartolini/crown,mikymod/crown,taylor001/crown,dbartolini/crown