Exclude `UNIXSocket` tests again; ref
MODIFY
mrbgems/mruby-socket/test/unix.rb
mrbgems/mruby-socket/test/unix.rb
+unless SocketTest.win?
+
def unixserver_test_block
path = SocketTest.tmppath
File.unlink path rescue nil
@@ -124,3 +126,5 @@ assert('UNIXSocket#recvfrom') do
# a[1][1] would be "" or something
end
end
+
+end # SocketTest.win?

Exclude `UNIXSocket` tests again; ref #3878