minor: Fix command monitoring dying on getting a BSON::Doc
minor: Fix command monitoring dying on getting a BSON::Doc

dagolden/mongo-perl-driver,xdg/mongo-perl-driver,mongodb/mongo-perl-driver,mongodb/mongo-perl-driver,xdg/mongo-perl-driver,dagolden/mongo-perl-driver,mongodb/mongo-perl-driver,dagolden/mongo-perl-driver,dagolden/mongo-perl-driver,xdg/mongo-perl-driver