Update to c/image v4.0.1

Update to use the correct c/image/v4 import path, work originally from
https://github.com/containers/skopeo/pull/733 by Valentin Rothberg <rothberg@redhat.com>.

Signed-off-by: Miloslav Trmač <mitr@redhat.com>

vendor/github.com/klauspost/compress/huff0/huff0.go

@@ -35,6 +35,9 @@ var (
 
 	// ErrTooBig is return if input is too large for a single block.
 	ErrTooBig = errors.New("input too big")
+
+	// ErrMaxDecodedSizeExceeded is return if input is too large for a single block.
+	ErrMaxDecodedSizeExceeded = errors.New("maximum output size exceeded")
 )
 
 type ReusePolicy uint8
@@ -86,6 +89,11 @@ type Scratch struct {
 	// Reuse will specify the reuse policy
 	Reuse ReusePolicy
 
+	// MaxDecodedSize will set the maximum allowed output size.
+	// This value will automatically be set to BlockSizeMax if not set.
+	// Decoders will return ErrMaxDecodedSizeExceeded is this limit is exceeded.
+	MaxDecodedSize int
+
 	br             byteReader
 	symbolLen      uint16 // Length of active part of the symbol table.
 	maxCount       int    // count of the most probable symbol
@@ -116,6 +124,9 @@ func (s *Scratch) prepare(in []byte) (*Scratch, error) {
 	if s.TableLog > tableLogMax {
 		return nil, fmt.Errorf("tableLog (%d) > maxTableLog (%d)", s.TableLog, tableLogMax)
 	}
+	if s.MaxDecodedSize <= 0 || s.MaxDecodedSize > BlockSizeMax {
+		s.MaxDecodedSize = BlockSizeMax
+	}
 	if s.clearCount && s.maxCount == 0 {
 		for i := range s.count {
 			s.count[i] = 0