tests: check return value of bson_append_*() functions.
tests: check return value of bson_append_*() functions.

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