minor fix

Signed-off-by: Xiaoxuan Wang <wangxiaoxuan119@gmail.com>

content/oci/oci.go

@@ -509,7 +509,7 @@ func (s *Store) GC(ctx context.Context) error {
 			dgst := dgstDir.Name()
 			blobDigest := digest.NewDigestFromEncoded(digest.Algorithm(alg), dgst)
 			err := blobDigest.Validate()
-			// skip unsupported directories
+			// skip irrelevant content
 			if err != nil {
 				continue
 			}

content/oci/oci_test.go

@@ -3016,15 +3016,15 @@ func TestStore_GCErrorPath(t *testing.T) {
 		t.Error("failed to push test content to src")
 	}
 
-	// test os.ReadDir() error
+	// unknown algorithm
 	if err := os.Mkdir(path.Join(algPath, "sha666"), 0777); err != nil {
 		t.Fatal(err)
 	}
 	if err = s.GC(ctx); err != nil {
 		t.Fatal("this error should be silently ignored")
 	}
 
-	// test os.Remove() error
+	// os.Remove() error
 	badDigest := digest.FromBytes([]byte("bad digest")).Encoded()
 	badPath := path.Join(algPath, "sha256", badDigest)
 	if err := os.Mkdir(badPath, 0777); err != nil {