src: Return on UV_ENOSYS in GetInterfaceAddresses.

[bryce-gibson]

When using SUNOS_NO_IFADDRS (on Solaris 10, for context) libuv returns -ENOSYS.

When that error is seen this method sets the response to the error code, but continues processing.

This leads to a segfault in uv_free_interface_addresses. Instead, just return as there is no need to process the rest of the function (afaict?)

[bryce-gibson]

Ah, just found 028194b.

Could it be applied to the 4.x branch?

[cjihrig]

The PR that provided that commit is #4272. It has been tagged to backport to 4.x already.

[bryce-gibson]

Oh, apologies, should've looked closer.

Thanks :-)

[cjihrig]

Thanks for the contribution anyway :-)