run go1.19 gofmt and make adjustments as needed

(Go 1.19 expanded doc comment syntax)

zfs/namecheck.go

@@ -53,7 +53,6 @@ var componentValidChar = regexp.MustCompile(`^[0-9a-zA-Z-_\.: ]+$`)
 // characters:
 //
 //	[-_.: ]
-//
 func ComponentNamecheck(datasetPathComponent string) error {
 	if len(datasetPathComponent) == 0 {
 		return fmt.Errorf("path component must not be empty")
@@ -91,8 +90,8 @@ func (e *PathValidationError) Error() string {
 
 // combines
 //
-//    lib/libzfs/libzfs_dataset.c: zfs_validate_name
-//    module/zcommon/zfs_namecheck.c: entity_namecheck
+//	lib/libzfs/libzfs_dataset.c: zfs_validate_name
+//	module/zcommon/zfs_namecheck.c: entity_namecheck
 //
 // The '%' character is not allowed because it's reserved for zfs-internal use
 func EntityNamecheck(path string, t EntityType) (err *PathValidationError) {

zfs/zfs.go

@@ -1022,8 +1022,10 @@ func (s *DrySendInfo) unmarshalZFSOutput(output []byte) (err error) {
 }
 
 // unmarshal info line, looks like this:
-//   full	zroot/test/a@1	5389768
-//   incremental	zroot/test/a@1	zroot/test/a@2	5383936
+//
+//	full	zroot/test/a@1	5389768
+//	incremental	zroot/test/a@1	zroot/test/a@2	5383936
+//
 // => see test cases
 func (s *DrySendInfo) unmarshalInfoLine(l string) (regexMatched bool, err error) {
 
@@ -1855,7 +1857,6 @@ var ErrBookmarkCloningNotSupported = fmt.Errorf("bookmark cloning feature is not
 // unless a bookmark with the name `bookmark` exists and has the same idenitty (zfs.FilesystemVersionEqualIdentity)
 //
 // v must be validated by the caller
-//
 func ZFSBookmark(ctx context.Context, fs string, v FilesystemVersion, bookmark string) (bm FilesystemVersion, err error) {
 
 	bm = FilesystemVersion{