Fix signal initializer.
Fix signal initializer.

Reviewer: Hugo Parente Lima <e250cbdf6b5a11059e9d944a6e5e9282be80d14c@openbossa.org>,
          Luciano Wolf <luciano.wolf@openbossa.org>

BadSingleton/pyside2,RobinD42/pyside,enthought/pyside,M4rtinK/pyside-android,M4rtinK/pyside-bb10,M4rtinK/pyside-android,M4rtinK/pyside-android,IronManMark20/pyside2,M4rtinK/pyside-bb10,qtproject/pyside-pyside,M4rtinK/pyside-android,RobinD42/pyside,gbaty/pyside2,PySide/PySide,enthought/pyside,BadSingleton/pyside2,enthought/pyside,RobinD42/pyside,M4rtinK/pyside-bb10,M4rtinK/pyside-bb10,qtproject/pyside-pyside,qtproject/pyside-pyside,qtproject/pyside-pyside,gbaty/pyside2,M4rtinK/pyside-android,M4rtinK/pyside-bb10,pankajp/pyside,M4rtinK/pyside-bb10,BadSingleton/pyside2,PySide/PySide,pankajp/pyside,pankajp/pyside,enthought/pyside,IronManMark20/pyside2,gbaty/pyside2,enthought/pyside,pankajp/pyside,IronManMark20/pyside2,PySide/PySide,IronManMark20/pyside2,enthought/pyside,pankajp/pyside,gbaty/pyside2,RobinD42/pyside,RobinD42/pyside,IronManMark20/pyside2,PySide/PySide,gbaty/pyside2,enthought/pyside,BadSingleton/pyside2,qtproject/pyside-pyside,RobinD42/pyside,BadSingleton/pyside2,RobinD42/pyside,PySide/PySide,M4rtinK/pyside-android