Added 'safe' return values to unimplemented SDLCore->openFolderPicker and SDLCore->openFilePicker.
Added 'safe' return values to unimplemented SDLCore->openFolderPicker and SDLCore->openFilePicker.

ivansafrin/Polycode,zeebok/Polycode,thorsummoner/polycode,ivansafrin/Polycode,hksonngan/Polycode,ivansafrin/Polycode,mcanthony/Polycode,zeebok/Polycode,mcanthony/Polycode,sshaileshk/Polycode,zeebok/Polycode,sshaileshk/Polycode,hksonngan/Polycode,cartman300/Polycode,Xetlin/Lua,GovanifY/Polycode,Xetlin/Lua,sshaileshk/Polycode,thorsummoner/polycode,ivansafrin/Polycode,hksonngan/Polycode,hksonngan/Polycode,cartman300/Polycode,Xetlin/Lua,Xetlin/Lua,thorsummoner/polycode,fodinabor/Polycode,fodinabor/Polycode,zeebok/Polycode,GovanifY/Polycode,GovanifY/Polycode,fodinabor/Polycode,thorsummoner/polycode,fodinabor/Polycode,sshaileshk/Polycode,carlosmarti/Polycode,mcanthony/Polycode,mcanthony/Polycode,carlosmarti/Polycode,cartman300/Polycode,cartman300/Polycode,GovanifY/Polycode,carlosmarti/Polycode