s3: skip the local filer socket on Windows (#11921)

The filer only listens on its unix socket when GOOS is not windows, so
with a filer socket path configured on Windows the S3 server dialed a
socket that never exists.

Fixes #7278

weed/command/s3.go

@@ -341,7 +341,8 @@ func (s3opt *S3Options) startS3Server() bool {
 
 	router := mux.NewRouter().SkipClean(true)
 	var localFilerSocket string
-	if s3opt.localFilerSocket != nil {
+	// The filer only listens on its local socket outside Windows.
+	if s3opt.localFilerSocket != nil && runtime.GOOS != "windows" {
 		localFilerSocket = *s3opt.localFilerSocket
 	}
 	var s3ApiServer *s3api.S3ApiServer