fixed font manager db not saved on iOS.
fixed font manager db not saved on iOS.

libnui/nui3,libnui/nui3,UIKit0/nui3,UIKit0/nui3,UIKit0/nui3,libnui/nui3,libnui/nui3,libnui/nui3,UIKit0/nui3,UIKit0/nui3,libnui/nui3,UIKit0/nui3,UIKit0/nui3