libsigrok: demo: close pipes on dev_acquisition_stop()

Fixes a bug where new acquisition failes due to leftover pipes from
previous acquisitions:
	sr: demo: dev_acquisition_start: pipe() failed
Indeed, PulseView had 2024 pipes opened. With this fix, it stabilizes at
33 with sampling thread active.

Signed-off-by: Hubert CHAUMETTE <redacted>

diff --git a/src/hardware/demo/demo.c b/src/hardware/demo/demo.c
index 4ad4ea3423f0890a1a39c04ae911fbfa2c388b60..920c1e4d6c93b33d79b0a1021d6e3d64373d8c98 100644 (file)
--- a/src/hardware/demo/demo.c
+++ b/src/hardware/demo/demo.c
@@ -901,6 +901,8 @@ static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
        g_io_channel_shutdown(devc->channel, FALSE, NULL);
        g_io_channel_unref(devc->channel);
        devc->channel = NULL;
+       close(devc->pipe_fds[0]);
+       close(devc->pipe_fds[1]);
 
        /* Send last packet. */
        packet.type = SR_DF_END;