Fix Mac llvm-gcc42 build after commit r16473.

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/23437020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16474 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/cctest/test-semaphore.cc

@@ -36,8 +36,7 @@
 using namespace ::v8::internal;
 
 
-TEST(WaitAndSignal) {
-  class WaitAndSignalThread V8_FINAL : public Thread {
+class WaitAndSignalThread V8_FINAL : public Thread {
   public:
   explicit WaitAndSignalThread(Semaphore* semaphore)
       : Thread("WaitAndSignalThread"), semaphore_(semaphore) {}
@@ -55,8 +54,10 @@ TEST(WaitAndSignal) {
 
   private:
   Semaphore* semaphore_;
-  };
+};
+
 
+TEST(WaitAndSignal) {
   Semaphore semaphore(0);
   WaitAndSignalThread t1(&semaphore);
   WaitAndSignalThread t2(&semaphore);
@@ -93,8 +94,10 @@ TEST(WaitFor) {
   // Semaphore signalled - no timeout.
   semaphore.Signal();
   ok = semaphore.WaitFor(TimeDelta::FromMicroseconds(0));
+  CHECK(ok);
   semaphore.Signal();
   ok = semaphore.WaitFor(TimeDelta::FromMicroseconds(100));
+  CHECK(ok);
   semaphore.Signal();
   ok = semaphore.WaitFor(TimeDelta::FromMicroseconds(1000));
   CHECK(ok);