OSX build error fixes

UDPController.h

@@ -37,6 +37,10 @@ public:
 	virtual int write(const unsigned char* buffer, unsigned int length);
 
 	virtual void close();
+	
+#if defined(__APPLE__)
+	int setNonblock(bool nonblock) { return 0; }
+#endif
 
 protected:
 	CUDPSocket       m_socket;