net: return fallbackOrder immediately for some GOOS
We don't need to check resolv.conf, nsswitch.conf on these systems.
Seems like this was the behaviour before CL 487196.
Change-Id: I34ef3510891c572772a222fbbe47693aa6c7cf38
GitHub-Last-Rev:
3aace0e6615b79bbf379e05ca3a353e194dc7c0b
GitHub-Pull-Request: golang/go#59946
Reviewed-on: https://go-review.googlesource.com/c/go/+/491995
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Mateusz Poliwczak <mpoliwczak34@gmail.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>