build(deps): bump github.com/containers/storage from 1.15.0 to 1.15.2

Bumps [github.com/containers/storage](https://github.com/containers/storage) from 1.15.0 to 1.15.2.
- [Release notes](https://github.com/containers/storage/releases)
- [Changelog](https://github.com/containers/storage/blob/master/docs/containers-storage-changes.md)
- [Commits](https://github.com/containers/storage/compare/v1.15.0...v1.15.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

1 files changed, 15 insertions, 1 deletions

diff --git a/vendor/github.com/klauspost/compress/flate/stateless.go b/vendor/github.com/klauspost/compress/flate/stateless.go
index 524ee0ae3..a47051197 100644
--- a/vendor/github.com/klauspost/compress/flate/stateless.go
+++ b/vendor/github.com/klauspost/compress/flate/stateless.go
@@ -3,6 +3,7 @@ package flate
 import (
 	"io"
 	"math"
+	"sync"
 )
 
 const (
@@ -49,11 +50,24 @@ func NewStatelessWriter(dst io.Writer) io.WriteCloser {
 	return &statelessWriter{dst: dst}
 }
 
+// bitWriterPool contains bit writers that can be reused.
+var bitWriterPool = sync.Pool{
+	New: func() interface{} {
+		return newHuffmanBitWriter(nil)
+	},
+}
+
 // StatelessDeflate allows to compress directly to a Writer without retaining state.
 // When returning everything will be flushed.
 func StatelessDeflate(out io.Writer, in []byte, eof bool) error {
 	var dst tokens
-	bw := newHuffmanBitWriter(out)
+	bw := bitWriterPool.Get().(*huffmanBitWriter)
+	bw.reset(out)
+	defer func() {
+		// don't keep a reference to our output
+		bw.reset(nil)
+		bitWriterPool.Put(bw)
+	}()
 	if eof && len(in) == 0 {
 		// Just write an EOF block.
 		// Could be faster...