json_parse_bool/json_parse_null: fix when parsing from a stream
json_parse_bool/json_parse_null: fix when parsing from a stream

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb