Merge pull request #4459 from thomasgl-orange/buffered-streams-in-TarCompression-NONE

[JENKINS-60907] add Buffered{In,Out}putStream to FilePath.TarCompression.NONE

core/src/main/java/hudson/FilePath.java

@@ -59,7 +59,7 @@ import hudson.util.NamingThreadFactory;
 import hudson.util.io.Archiver;
 import hudson.util.io.ArchiverFactory;
 
-
+import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileFilter;
@@ -758,10 +758,10 @@ public final class FilePath implements SerializableOnlyOverRemoting {
     public enum TarCompression {
         NONE {
             public InputStream extract(InputStream in) {
-                return in;
+                return new BufferedInputStream(in);
             }
             public OutputStream compress(OutputStream out) {
-                return out;
+                return new BufferedOutputStream(out);
             }
         },
         GZIP {