Thread: pgsql: Fix old bug in contrib/sslinfo: X509_NAME_to_text freed the

Log Message:
-----------
Fix old bug in contrib/sslinfo: X509_NAME_to_text freed the BIO_s_mem buffer
it was using too soon.  In a situation where pg_do_encoding_conversion is
a no-op, this led to garbage data returned.

In HEAD, also modify the code that's ensuring null termination to make it
a tad more obvious what's happening.

Modified Files:
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    pgsql/contrib/sslinfo:
        sslinfo.c (r1.7 -> r1.8)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/sslinfo/sslinfo.c?r1=1.7&r2=1.8)