Allow the debugger agent to reuse ports stuck in TIME_WAIT for listening

test/cctest/test-debug.cc

 // Copyright 2007-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 3806 matching lines @@
   // running some code.
   v8::Debug::SendHostDispatch(NULL);
   v8::Debug::SendCommand(buffer, AsciiToUtf16(command_continue, buffer));
   CompileRun("void 0");
 
   // The host dispatch callback should be called.
   CHECK_EQ(1, host_dispatch_hit_count);
 }
 
 
-// This test fails on some Linux versions - disabled for now.
-#if 0
 TEST(DebuggerAgent) {
   // Make sure this port is not used by other tests to allow tests to run in
   // parallel.
   const int kPort = 5858;
 
   // Make a string with the port number.
   const int kPortBuferLen = 6;
   char port_str[kPortBuferLen];
   OS::SNPrintF(i::Vector<char>(port_str, kPortBuferLen), "%d", kPort);
 
@@ skipping 19 matching lines @@
   // Test starting and stopping the agent with the required port already
   // occoupied.
   i::Socket* server = i::OS::CreateSocket();
   server->Bind(kPort);
 
   i::Debugger::StartAgent(kPort);
   i::Debugger::StopAgent();
 
   delete server;
 }
-#endif