COVERITY: Fixed Resource leak (RESOURCE_LEAK) 11.

overwrite_var: Overwriting "pstmt" in "pstmt = conn.prepareStatement("INSERT INTO `cloud`.`ldap_configuration`(hostname, port) VALUES(?,?)")" leaks the resource that "pstmt" refers to.

Signed-off-by: Sebastien Goasguen <runseb@gmail.com>