Fixed some cctest flakiness on mac.

test/cctest/test-sockets.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 
 #include "v8.h"
 #include "platform.h"
 #include "cctest.h"
 
 
 using namespace ::v8::internal;
 
 
@@ skipping 24 matching lines @@
   Socket* client_;  // Single client connection used by the test.
   Semaphore* listening_;  // Signalled when the server socket is in listen mode.
 };
 
 
 void SocketListenerThread::Run() {
   bool ok;
 
   // Create the server socket and bind it to the requested port.
   server_ = OS::CreateSocket();
+  server_->SetReuseAddress(true);
   CHECK(server_ != NULL);
   ok = server_->Bind(port_);
   CHECK(ok);
 
   // Listen for new connections.
   ok = server_->Listen(1);
   CHECK(ok);
   listening_->Signal();
 
   // Accept a connection.
@@ skipping 97 matching lines @@
 }
 
 
 TEST(HToNNToH) {
   uint16_t x = 1234;
   CHECK_EQ(x, Socket::NToH(Socket::HToN(x)));
 
   uint32_t y = 12345678;
   CHECK(y == Socket::NToH(Socket::HToN(y)));
 }