Rob Wu b674b82109 resolv: Reset defdname before use in __res_vinit [BZ #19369] ...

Resetting defdname (default domain name) before use in __res_vinit
ensures that the default domain name is correctly set to a default
value when it is not set by the LOCALDOMAIN environment variable or
the "domain" or "search" parameters in resolv.conf

Tested using the steps from:
https://sourceware.org/bugzilla/show_bug.cgi?id=19369

2015-12-29 13:28:04 -05:00

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