Problem: compile warnings on Windows in new radio/dish code

Solution: fix these.

src/dish.cpp

@@ -325,7 +325,7 @@ int zmq::dish_session_t::pull_msg (msg_t *msg_)
     if (!msg_->is_join () && !msg_->is_leave ())
         return rc;
     else {
-        int group_length = strlen (msg_->group ());
+        int group_length = (int) strlen (msg_->group ());
 
         msg_t command;
         int offset;

src/radio.cpp

@@ -184,12 +184,12 @@ int zmq::radio_session_t::push_msg (msg_t *msg_)
 
         //  Set the msg type to either JOIN or LEAVE
         if (data_size >= 5 && memcmp (command_data, "\4JOIN", 5) == 0) {
-            group_length = data_size - 5;
+            group_length = (int) data_size - 5;
             group = command_data + 5;
             rc = join_leave_msg.init_join ();
         }
         else if (data_size >= 6 && memcmp (command_data, "\5LEAVE", 6) == 0) {
-            group_length = data_size - 6;
+            group_length = (int) data_size - 6;
             group = command_data + 6;
             rc = join_leave_msg.init_leave ();
         }
@@ -223,7 +223,7 @@ int zmq::radio_session_t::pull_msg (msg_t *msg_)
             return rc;
 
         const char *group = pending_msg.group ();
-        int length = strlen (group);
+        int length = (int) strlen (group);
 
         //  First frame is the group
         msg_->init_size (length);

src/udp_address.hpp

@@ -41,7 +41,6 @@
 
 namespace zmq
 {
-
     class udp_address_t
     {
     public:
@@ -71,7 +70,6 @@ namespace zmq
         const in_addr interface_ip () const;
 
     private:
-
         in_addr  multicast;
         in_addr  iface;
         sockaddr_in bind_address;

src/udp_engine.cpp

@@ -38,7 +38,7 @@ zmq::udp_engine_t::~udp_engine_t()
     }
 }
 
-int zmq::udp_engine_t::init (address_t* address_, bool send_, bool recv_)
+int zmq::udp_engine_t::init (address_t *address_, bool send_, bool recv_)
 {
     zmq_assert (address_);
     zmq_assert (send_ || recv_);
@@ -74,33 +74,31 @@ void zmq::udp_engine_t::plug (io_thread_t* io_thread_, session_base_t *session_)
     if (recv_enabled) {
         int on = 1;
         int rc = setsockopt (fd, SOL_SOCKET, SO_REUSEADDR, (char *) &on, sizeof (on));
-        #ifdef ZMQ_HAVE_WINDOWS
+#ifdef ZMQ_HAVE_WINDOWS
         wsa_assert (rc != SOCKET_ERROR);
-        #else
+#else
         errno_assert (rc == 0);
-        #endif
+#endif
 
-        rc = bind (fd, address->resolved.udp_addr->bind_addr (), address->resolved.udp_addr->bind_addrlen ());
-        #ifdef ZMQ_HAVE_WINDOWS
+        rc = bind (fd, address->resolved.udp_addr->bind_addr (),
+                       address->resolved.udp_addr->bind_addrlen ());
+#ifdef ZMQ_HAVE_WINDOWS
         wsa_assert (rc != SOCKET_ERROR);
-        #else
+#else
         errno_assert (rc == 0);
-        #endif
+#endif
 
         if (address->resolved.udp_addr->is_mcast ()) {
             struct ip_mreq mreq;
             mreq.imr_multiaddr = address->resolved.udp_addr->multicast_ip ();
             mreq.imr_interface = address->resolved.udp_addr->interface_ip ();
-
             int rc = setsockopt (fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char*) &mreq, sizeof (mreq));
-
 #ifdef ZMQ_HAVE_WINDOWS
             wsa_assert (rc != SOCKET_ERROR);
 #else
             errno_assert (rc == 0);
 #endif
         }
-
         set_pollin (handle);
 
         //  Call restart output to drop all join/leave commands
@@ -147,10 +145,10 @@ void zmq::udp_engine_t::out_event()
         errno_assert (rc == 0);
 
 #ifdef ZMQ_HAVE_WINDOWS
-        rc = sendto(fd, (char*) out_buffer, size, 0,
-            address->resolved.udp_addr->dest_addr(),
-            address->resolved.udp_addr->dest_addrlen());
-        wsa_assert(rc != SOCKET_ERROR);
+        rc = sendto (fd, (const char *) out_buffer, (int) size, 0,
+            address->resolved.udp_addr->dest_addr (),
+            (int) address->resolved.udp_addr->dest_addrlen ());
+        wsa_assert (rc != SOCKET_ERROR);
 #else
         rc = sendto (fd, out_buffer, size, 0,
             address->resolved.udp_addr->dest_addr (),