Fix build on windows

src/address.cpp

@@ -41,10 +41,12 @@ zmq::address_t::~address_t ()
             resolved.tcp_addr = 0;
         }
     }
+#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
     else if (protocol == "ipc") {
         if (resolved.ipc_addr) {
             delete resolved.ipc_addr;
             resolved.ipc_addr = 0;
         }
     }
+#endif
 }

src/address.hpp

@@ -26,8 +26,9 @@
 namespace zmq
 {
     class tcp_address_t;
+#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
     class ipc_address_t;
-
+#endif
     struct address_t {
         address_t (const std::string &protocol_, const std::string &address_);
 
@@ -39,10 +40,11 @@ namespace zmq
         //  Protocol specific resolved address
         union {
             tcp_address_t *tcp_addr;
+#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
             ipc_address_t *ipc_addr;
+#endif
         } resolved;
     };
-
 }
 
 #endif