fix assert in test_bson_json_read_bad_cb
fix assert in test_bson_json_read_bad_cb

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