No need for the github.com/pierrec/lz4/v4 work-around anymore

The fix was was merged[1] and released upstream.

[1]: pierrec/lz4#212

go.mod

@@ -14,7 +14,7 @@ require (
 	github.com/klauspost/oui v0.0.0-20150225163751-35b4deb627f8
 	github.com/opencontainers/go-digest v1.0.0
 	github.com/otiai10/copy v1.12.0
-	github.com/pierrec/lz4/v4 v4.1.18
+	github.com/pierrec/lz4/v4 v4.1.21
 	github.com/projectcalico/libcalico-go v1.7.3
 	github.com/regclient/regclient v0.5.4
 	github.com/samber/lo v1.38.1

go.sum

@@ -141,8 +141,8 @@ github.com/otiai10/copy v1.12.0/go.mod h1:rSaLseMUsZFFbsFGc7wCJnnkTAvdc5L6VWxPE4
 github.com/otiai10/mint v1.5.1 h1:XaPLeE+9vGbuyEHem1JNk3bYc7KKqyI/na0/mLd/Kks=
 github.com/otiai10/mint v1.5.1/go.mod h1:MJm72SBthJjz8qhefc4z1PYEieWmy8Bku7CjcAqyUSM=
 github.com/pierrec/lz4/v4 v4.1.14/go.mod h1:gZWDp/Ze/IJXGXf23ltt2EXimqmTUXEy0GFuRQyBid4=
-github.com/pierrec/lz4/v4 v4.1.18 h1:xaKrnTkyoqfh1YItXl56+6KJNVYWlEEPuAQW9xsplYQ=
-github.com/pierrec/lz4/v4 v4.1.18/go.mod h1:gZWDp/Ze/IJXGXf23ltt2EXimqmTUXEy0GFuRQyBid4=
+github.com/pierrec/lz4/v4 v4.1.21 h1:yOVMLb6qSIDP67pl/5F7RepeKYu/VmTyEXvuMI5d9mQ=
+github.com/pierrec/lz4/v4 v4.1.21/go.mod h1:gZWDp/Ze/IJXGXf23ltt2EXimqmTUXEy0GFuRQyBid4=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=

internal/oci/push.go

@@ -209,12 +209,7 @@ func pushDisk(
 	}
 
 	chunker, err := chunkerpkg.NewChunker(targetDiskLayerSizeBytes, func(w io.Writer) (io.WriteCloser, error) {
-		lz4Writer := lz4.NewWriter(w)
-
-		// Work around https://github.com/pierrec/lz4/pull/212
-		_, _ = lz4Writer.Write([]byte{})
-
-		return lz4Writer, nil
+		return lz4.NewWriter(w), nil
 	})
 	if err != nil {
 		return []types.Descriptor{}, err