ols: Clean up: Always keep sample_buf_size up to date

Author: v1ne

src/hardware/openbench-logic-sniffer/api.c

@@ -409,7 +409,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 		return SR_ERR;
 
 	/* Reset all operational states. */
-	devc->rle_count = devc->sample_buf_size = 0;
+	devc->rle_count = 0;
 	devc->cnt_samples = devc->raw_sample_size = 0;
 	devc->cnt_rx_bytes = devc->cnt_rx_raw_samples = 0;
 	memset(devc->raw_sample, 0, 4);

src/hardware/openbench-logic-sniffer/protocol.c

@@ -590,6 +590,7 @@ SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data)
 
 		g_free(devc->sample_buf);
 		devc->sample_buf = 0;
+		devc->sample_buf_size = 0;
 
 		serial_flush(serial);
 		abort_acquisition(sdi);