Reset frame position when wxDisplay cannot find the matching display

Fix #6732

common/eda_base_frame.cpp

@@ -289,7 +289,10 @@ void EDA_BASE_FRAME::LoadSettings( wxConfigBase* aCfg )
     int displayIndex = wxDisplay::GetFromPoint( m_FramePos );
 
     if( displayIndex == wxNOT_FOUND )
+	{
         displayIndex = 0;
+        m_FramePos = wxDefaultPosition;
+	}
 
     wxDisplay display( displayIndex );
     wxRect clientSize = display.GetClientArea();