json: allow endptr to be NULL.
json: allow endptr to be NULL.

jqk6/libbson,bjori/libbson,jqk6/libbson,mapr/libbson,Convey-Compliance/libbson,paulmelnikow/libbson,mongodbinc-interns/libbson,mongodbinc-interns/libbson,rayyang2000/libbson,mongodb/libbson,bjori/libbson,derickr/libbson,4Second2None/libbson_tmp,4Second2None/libbson_tmp,rayyang2000/libbson,ajdavis/libbson,derickr/libbson,Machyne/libbson,derickr/libbson,rcsanchez97/libbson,paulmelnikow/libbson,rcsanchez97/libbson,mongodb/libbson,rcsanchez97/libbson,4Second2None/libbson_tmp,ajdavis/libbson,mongodb/libbson,mongodbinc-interns/libbson,alexeyvo/libbson,ajdavis/libbson,alexeyvo/libbson,bjori/libbson,ksuarz/libbson,mapr/libbson,alexeyvo/libbson,mongodbinc-interns/libbson,Convey-Compliance/libbson,remicollet/libbson,derickr/libbson,Convey-Compliance/libbson,paulmelnikow/libbson,4Second2None/libbson_tmp,remicollet/libbson,paulmelnikow/libbson,remicollet/libbson,ksuarz/libbson,Machyne/libbson,Machyne/libbson,paulmelnikow/libbson,jqk6/libbson,jqk6/libbson,mapr/libbson,ksuarz/libbson,remicollet/libbson,rayyang2000/libbson,Machyne/libbson,rayyang2000/libbson