remove unnecessary brace and semicolon in 'putBlockInfo.synchronize' block

delete semicolon

Author: Chen Chao <crazyjvm@gmail.com>

Closes #411 from CrazyJvm/patch-5 and squashes the following commits:

72333a3 [Chen Chao] remove unnecessary brace
de5d9a7 [Chen Chao] style fix

core/src/main/scala/org/apache/spark/storage/BlockManager.scala

@@ -658,10 +658,9 @@ private[spark] class BlockManager(
               memoryStore.putValues(blockId, iterator, level, true)
             case ArrayBufferValues(array) =>
               memoryStore.putValues(blockId, array, level, true)
-            case ByteBufferValues(bytes) => {
+            case ByteBufferValues(bytes) =>
               bytes.rewind()
               memoryStore.putBytes(blockId, bytes, level)
-            }
           }
           size = res.size
           res.data match {
@@ -677,10 +676,9 @@ private[spark] class BlockManager(
               tachyonStore.putValues(blockId, iterator, level, false)
             case ArrayBufferValues(array) =>
               tachyonStore.putValues(blockId, array, level, false)
-            case ByteBufferValues(bytes) => {
-              bytes.rewind();
+            case ByteBufferValues(bytes) => 
+              bytes.rewind()
               tachyonStore.putBytes(blockId, bytes, level)
-            }
           }
           size = res.size
           res.data match {
@@ -697,10 +695,9 @@ private[spark] class BlockManager(
               diskStore.putValues(blockId, iterator, level, askForBytes)
             case ArrayBufferValues(array) =>
               diskStore.putValues(blockId, array, level, askForBytes)
-            case ByteBufferValues(bytes) => {
+            case ByteBufferValues(bytes) => 
               bytes.rewind()
               diskStore.putBytes(blockId, bytes, level)
-            }
           }
           size = res.size
           res.data match {