Fix compiler warning.

diff --git a/hardware/demo/demo.c b/hardware/demo/demo.c
index f1580a7dfc36f808ffa49d6053c041bb8a082c8e..ec8a74bc3f5c225a64fe55e5e5c8e77ef270804f 100644 (file)
--- a/hardware/demo/demo.c
+++ b/hardware/demo/demo.c
@@ -283,7 +283,8 @@ static int receive_data(int fd, int revents, void *user_data)
        fd = fd;
        revents = revents;
 
-       g_io_channel_read_chars(channels[0], (gchar *)&c, BUFSIZE, &z, NULL);
+       g_io_channel_read_chars(channels[0], (gchar *)&c, BUFSIZE,
+                               (gsize *)&z, NULL);
 
        if (z > 0) {
                packet.type = DF_LOGIC;