compile error in latest svn tree at a 32 bit Gentoo Linux

[Toralf Förster <toralf.foerster () gmx de>]

introduced between 52661:52666 :

  CC     libdissectors_la-packet-dplay.lo
packet-dns.c: In function 'add_opt_rr_to_tree':
packet-dns.c:1424:15: error: variable 'Z_tree' set but not used
[-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors


-- 
MfG/Sincerely
Toralf Förster
pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3
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