Fix test compilation in streaming.

Author: JoshRosen

streaming/src/test/scala/org/apache/spark/streaming/ReceivedBlockHandlerSuite.scala

@@ -338,7 +338,7 @@ class ReceivedBlockHandlerSuite
 
     storeAndVerify(blocks.map { b => IteratorBlock(b.toIterator) })
     storeAndVerify(blocks.map { b => ArrayBufferBlock(new ArrayBuffer ++= b) })
-    storeAndVerify(blocks.map { b => ByteBufferBlock(dataToByteBuffer(b)) })
+    storeAndVerify(blocks.map { b => ByteBufferBlock(dataToByteBuffer(b).toByteBuffer) })
   }
 
   /** Test error handling when blocks that cannot be stored */

streaming/src/test/scala/org/apache/spark/streaming/rdd/WriteAheadLogBackedBlockRDDSuite.scala

@@ -223,7 +223,7 @@ class WriteAheadLogBackedBlockRDDSuite
     require(blockData.size === blockIds.size)
     val writer = new FileBasedWriteAheadLogWriter(new File(dir, "logFile").toString, hadoopConf)
     val segments = blockData.zip(blockIds).map { case (data, id) =>
-      writer.write(blockManager.dataSerialize(id, data.iterator))
+      writer.write(blockManager.dataSerialize(id, data.iterator).toByteBuffer)
     }
     writer.close()
     segments