fixed compile errors.

Author: ScrapCodes

streaming/src/main/scala/org/apache/spark/streaming/dstream/FileInputDStream.scala

@@ -191,10 +191,9 @@ class FileInputDStream[K, V, F <: NewInputFormat[K, V]](
       logDebug(s"Getting new files for time $currentTime, " +
         s"ignoring files older than $modTimeIgnoreThreshold")
 
-      val directories = Option(fs.globStatus(directoryPath))
+      val directories = Option(fs.globStatus(directoryPath)).getOrElse(Array.empty[FileStatus])
         .filter(_.isDirectory)
         .map(_.getPath)
-        .getOrElse(Array.empty[FileStatus])
       val newFiles = directories.flatMap(dir =>
         fs.listStatus(dir)
           .filter(isNewFile(_, currentTime, modTimeIgnoreThreshold))