Potential memory leak -02.

[rachyyyy]

Potential memory leak in kuhl_m_lsadump_dc.c line 220. The return value of ldap_get_dn is not freed before being passed to the function will cause a memory leak. Doc says "The ldap_get_dn() routine takes an entry as returned by ldap_first_entry(3) or ldap_next_entry(3) and returns a copy of the entry's DN. Space for the DN will be obtained dynamically and should be freed by the caller using ldap_memfree(3). Notes：These routines dynamically allocate memory that the caller must free."