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(parent: fbc56f7) | patch

Fix write-past-buffer-end in ldapServiceLookup().

Fix write-past-buffer-end in ldapServiceLookup().

The code to assemble ldap_get_values_len's output into a single string
wrote the terminating null one byte past where it should. Fix that,
and make some other cosmetic adjustments to make the code a trifle more
readable and more in line with usual Postgres coding style.

Also, free the "result" string when done with it, to avoid a permanent
memory leak.

Bug report and patch by Albe Laurenz, cosmetic adjustments by me.

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