use of dblink_build_sql_insert() induces a server crash

Hi All,

Testcase:

create table foo (a  int );
postgres=# SELECT dblink_build_sql_insert('foo','1 2',2,'{\"0\", \"a\"}','{\"99\", \"xyz\"}');
HINT:  Use the escape string syntax for escapes, e.g., E'\r\n'.
server closed the connection unexpectedly
    This probably means the server terminated abnormally
    before or while processing the request.
The connection to the server was lost. Attempting reset: Failed.

Version: Latest

Description:  The dblink_build_sql_insert()/get_tuple_of_interest functions is not taking care number of attributes in the target.

PFA patch to fix the same.

Thanks,
Rushabh Lathia
(www.EnterpriseDB.com)