Some style cleanup

core/src/main/scala/spark/api/python/PythonRDD.scala

@@ -104,19 +104,17 @@ private[spark] class PythonRDD[T: ClassManifest](
       private def read(): Array[Byte] = {
         try {
           stream.readInt() match {
-            case length if length > 0 => {
+            case length if length > 0 =>
               val obj = new Array[Byte](length)
               stream.readFully(obj)
               obj
-            }
-            case -2 => {
+            case -2 =>
               // Signals that an exception has been thrown in python
               val exLength = stream.readInt()
               val obj = new Array[Byte](exLength)
               stream.readFully(obj)
               throw new PythonException(new String(obj))
-            }
-            case -1 => {
+            case -1 =>
               // We've finished the data section of the output, but we can still read some
               // accumulator updates; let's do that, breaking when we get EOFException
               while (true) {
@@ -124,9 +122,8 @@ private[spark] class PythonRDD[T: ClassManifest](
                 val update = new Array[Byte](len2)
                 stream.readFully(update)
                 accumulator += Collections.singletonList(update)
+                new Array[Byte](0)
               }
-              new Array[Byte](0)
-          }
           }
         } catch {
           case eof: EOFException => {