nextincr in krb5int_dns_init too small

[Daniel Colascione]

krb5int_dns_init has a conventional malloc-and-realloc-until-it-fits
loop, but inside the loop body, we're calling res_nsearch, which can do
non-trivial work. It'd be better to increase the initial guess from 2048
to something bigger; even 4k is a trivial amount of memory these days,
and I'm getting 2786-byte responses.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 819 bytes
Desc: OpenPGP digital signature
Url : http://mailman.mit.edu/pipermail/krbdev/attachments/20160218/829bbf31/attachment.bin