Use a C-style coercion cast for portability. Naither reinterpret_cast,

nor static_cast is working.

Signed-off-by: FrancisANDRE <zosrothko@orange.fr>

Foundation/src/Message.cpp

@@ -118,7 +118,7 @@ void Message::init()
 #if !defined(POCO_VXWORKS)
 	_pid = Process::id();
 #endif
-	_ostid = static_cast<IntPtr>(Thread::currentTid());
+	_ostid = (IntPtr)Thread::currentTid();
 	Thread* pThread = Thread::current();
 	if (pThread)
 	{