virtio_console: Use strscpy() to instead of strncpy()

The implementation of strscpy() is more robust and safer.
That's now the recommended way to copy NUL-terminated strings.
Signed-off-by: Bo Liu <liubo03@inspur.com>
Link: https://lore.kernel.org/r/20230118012944.2436-1-liubo03@inspur.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/char/virtio_console.c

@@ -1666,9 +1666,8 @@ static void handle_control_message(struct virtio_device *vdev,
 				"Not enough space to store port name\n");
 			break;
 		}
-		strncpy(port->name, buf->buf + buf->offset + sizeof(*cpkt),
-			name_size - 1);
-		port->name[name_size - 1] = 0;
+		strscpy(port->name, buf->buf + buf->offset + sizeof(*cpkt),
+			name_size);
 
 		/*
 		 * Since we only have one sysfs attribute, 'name',