Address some go9p issues adressed by SonarCloud

third_party/go9p/ufs_darwin.go

@@ -23,14 +23,12 @@ func atime(stat *syscall.Stat_t) time.Time {
 func isBlock(d os.FileInfo) bool {
 	stat := d.Sys().(*syscall.Stat_t)
 	return (stat.Mode & syscall.S_IFMT) == syscall.S_IFBLK
-	return true
 }
 
 // IsChar reports if the file is a character device
 func isChar(d os.FileInfo) bool {
 	stat := d.Sys().(*syscall.Stat_t)
 	return (stat.Mode & syscall.S_IFMT) == syscall.S_IFCHR
-	return true
 }
 
 func dir2Qid(d os.FileInfo) *Qid {

third_party/go9p/unpack.go

@@ -218,7 +218,7 @@ func Unpack(buf []byte, dotu bool) (fc *Fcall, err error, fcsz int) {
 		goto szerror
 	}
 
-	return
+	return //NOSONAR
 
 szerror:
 	return nil, &Error{"invalid size", EINVAL}, 0