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(ITS#8674) Leak in ldap_create_assertion_control

Full_Name: Matt Johnson
Version: 2.4.40
OS: RedHat 7.2 (Maipo)
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (

The LDAPClient::modify logic has a leak within the
    ldap_create_assertion_control method.  The leaky code occurs when the
    existing ld_errno is anything but 0 when
    the method is invoked.  Not only that, but your assertion
    returned is NULL.

The workaround is to call the following before calling

int lvErrno = 0;
ldap_set_option(myLDAPPtr, LDAP_OPT_RESULT_CODE, &lvErrno);