sscanf_s doesn't exist for mingw
sscanf_s doesn't exist for mingw

use sscanf on mingw on win32

rayyang2000/libbson,paulmelnikow/libbson,bjori/libbson,ksuarz/libbson,rayyang2000/libbson,jqk6/libbson,mongodbinc-interns/libbson,ajdavis/libbson,jqk6/libbson,Convey-Compliance/libbson,paulmelnikow/libbson,derickr/libbson,Machyne/libbson,mongodb/libbson,mongodbinc-interns/libbson,mongodb/libbson,mapr/libbson,ajdavis/libbson,Machyne/libbson,mongodbinc-interns/libbson,remicollet/libbson,derickr/libbson,remicollet/libbson,mapr/libbson,rayyang2000/libbson,Machyne/libbson,remicollet/libbson,bjori/libbson,mapr/libbson,Convey-Compliance/libbson,alexeyvo/libbson,rcsanchez97/libbson,rcsanchez97/libbson,ksuarz/libbson,ajdavis/libbson,Convey-Compliance/libbson,paulmelnikow/libbson,alexeyvo/libbson,bjori/libbson,paulmelnikow/libbson,rayyang2000/libbson,alexeyvo/libbson,mongodb/libbson,jqk6/libbson,jqk6/libbson,derickr/libbson,derickr/libbson,rcsanchez97/libbson,mongodbinc-interns/libbson,ksuarz/libbson,Machyne/libbson,paulmelnikow/libbson,remicollet/libbson