Fix cpplint whitespace/blank_line issues

Change-Id: Ice937e95e23dd622c17054551d4ae4cebd0ef8a2
diff --git a/runtime/thread_pool.cc b/runtime/thread_pool.cc
index 784a7ca..067ef2d 100644
--- a/runtime/thread_pool.cc
+++ b/runtime/thread_pool.cc
@@ -180,10 +180,7 @@
 
 WorkStealingWorker::WorkStealingWorker(ThreadPool* thread_pool, const std::string& name,
                                        size_t stack_size)
-    : ThreadPoolWorker(thread_pool, name, stack_size),
-      task_(NULL) {
-
-}
+    : ThreadPoolWorker(thread_pool, name, stack_size), task_(NULL) {}
 
 void WorkStealingWorker::Run() {
   Thread* self = Thread::Current();
@@ -254,9 +251,7 @@
   }
 }
 
-WorkStealingWorker::~WorkStealingWorker() {
-
-}
+WorkStealingWorker::~WorkStealingWorker() {}
 
 WorkStealingThreadPool::WorkStealingThreadPool(size_t num_threads)
     : ThreadPool(0),
@@ -288,8 +283,6 @@
   return NULL;
 }
 
-WorkStealingThreadPool::~WorkStealingThreadPool() {
-
-}
+WorkStealingThreadPool::~WorkStealingThreadPool() {}
 
 }  // namespace art