[PATCH] resolv: Do not copy IPv4 addresses to IPv6 address array

[Florian Weimer]

While working on the resolver code, I discovered some address copying
which appears to be unnecessary.  The attached patch removes that.

The comments refer to timing data, but we currently do not have that.

Andreas, if I recall correctly, you wrote get_nsaddr.  What do you think
about this change?

Thanks,
Florian
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