skip fat32 check on unmapped network drive (#902)
skip fat32 check on unmapped network drive (#902)

ospalh/libanki3,sunclx/anki,Stvad/anki,holycrepe/anki,subfusc/anki,jakesyl/ruby-card,hssm/anki,jkitching/anki,weihautin/anki,abeyer/anki,weihautin/anki,jakesyl/ruby-card,go38/anki,Arthaey/anki,eduOS/anki,hssm/anki,LucasCabello/anki,xuewenfei/anki,socialpercon/anki-1,florianjacob/anki,kenjhim/anki