Fix error when SplashScreen closes on Mac

It occurs always, every time the TAT is executed, the SplashScreen appears and 
yields to the Configuration screen, closing itself and producing an error with 
a message similar to: "assert "m_count > 0" failed in DecRef()". The only way 
to get around this at the moment is to disable the SplashScreen in code and 
show the Configuration screen directly. This only occurs on Mac OSX. It may be 
related to frame's region registration or something like that.

Original issue reported on code.google.com by Lince3D@gmail.com on 5 Jan 2015 at 1:02

indiantarget / quimeraengine

Fix error when SplashScreen closes on Mac #702