Problem: produce_ready in gssapi_mechanism_base not deduped

Solution: call make_command_with_basic_properties

src/gssapi_mechanism_base.cpp

@@ -314,32 +314,7 @@ int zmq::gssapi_mechanism_base_t::process_initiate (msg_t *msg_, void **token_va
 
 int zmq::gssapi_mechanism_base_t::produce_ready (msg_t *msg_)
 {
-    unsigned char * const command_buffer = (unsigned char *) malloc (512);
-    alloc_assert (command_buffer);
-
-    unsigned char *ptr = command_buffer;
-
-    //  Add command name
-    memcpy (ptr, "\x05READY", 6);
-    ptr += 6;
-
-    //  Add socket type property
-    const char *socket_type = socket_type_string (options.type);
-    ptr += add_property (ptr, ZMQ_MSG_PROPERTY_SOCKET_TYPE, socket_type,
-                         strlen (socket_type));
-
-    //  Add identity property
-    if (options.type == ZMQ_REQ
-    ||  options.type == ZMQ_DEALER
-    ||  options.type == ZMQ_ROUTER)
-        ptr += add_property (ptr, ZMQ_MSG_PROPERTY_IDENTITY, options.identity,
-                             options.identity_size);
-
-    const size_t command_size = ptr - command_buffer;
-    const int rc = msg_->init_size (command_size);
-    errno_assert (rc == 0);
-    memcpy (msg_->data (), command_buffer, command_size);
-    free (command_buffer);
+    make_command_with_basic_properties (msg_, "\5READY", 6);
 
     if (do_encryption)
         return encode_message (msg_);