[#1132] *: Use path/filepath package when working with files

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>

pkg/local_object_storage/writecache/util.go

@@ -2,14 +2,14 @@ package writecache
 
 import (
 	"os"
-	"path"
+	"path/filepath"
 
 	"go.etcd.io/bbolt"
 )
 
 // OpenDB opens BoltDB instance for write-cache. Opens in read-only mode if ro is true.
 func OpenDB(p string, ro bool) (*bbolt.DB, error) {
-	return bbolt.Open(path.Join(p, dbName), os.ModePerm, &bbolt.Options{
+	return bbolt.Open(filepath.Join(p, dbName), os.ModePerm, &bbolt.Options{
 		NoFreelistSync: true,
 		NoSync:         true,
 		ReadOnly:       ro,