Fix two minor compiler warnings.

hardware/link-mso19/protocol.c

@@ -412,6 +412,7 @@ SR_PRIV int mso_receive_data(int fd, int revents, void *cb_data)
 		/* FIXME: Need to do conversion to mV */
 		analog_out[i] = (devc->buffer[i * 3] & 0x3f) |
 		    ((devc->buffer[i * 3 + 1] & 0xf) << 6);
+		(void)analog_out;
 		logic_out[i] = ((devc->buffer[i * 3 + 1] & 0x30) >> 4) |
 		    ((devc->buffer[i * 3 + 2] & 0x3f) << 2);
 	}

hardware/nexus-osciprime/api.c

@@ -271,8 +271,8 @@ static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
 
 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
 {
-
 	(void)sdi;
+	(void)data;
 
 	switch (key) {
 	default: