Bugzilla #34142: use writeTo() instead of toByteArray in DeferredFileOutputStream.thresholdReached().

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/io/trunk@158731 13f79535-47bb-0310-9956-ffa450edef68

Author: mfncooper

src/java/org/apache/commons/io/output/DeferredFileOutputStream.java

@@ -119,9 +119,8 @@ protected OutputStream getStream() throws IOException
      */
     protected void thresholdReached() throws IOException
     {
-        byte[] data = memoryOutputStream.toByteArray();
         FileOutputStream fos = new FileOutputStream(outputFile);
-        fos.write(data);
+        memoryOutputStream.writeTo(fos);
         diskOutputStream = fos;
         currentOutputStream = fos;
         memoryOutputStream = null;