Client: fix draw menu (#490)

Do not draw the old menu of the previous server when you connect to another server

cl_dll/menu.cpp

@@ -51,6 +51,7 @@ void CHudMenu::InitHUDData( void )
 {
 	m_fMenuDisplayed = 0;
 	m_bitsValidSlots = 0;
+	m_iFlags &= ~HUD_ACTIVE;
 	Reset();
 }