[PATCH] qmi: avoid free of non heap object

qmux_create_client_timeout() free's a non heap object, avoid calling
__request_free() and inline free_request() instead.

In function 'l_free',
    inlined from '__request_free' at drivers/qmimodem/qmi.c:293:3,
    inlined from 'qmux_create_client_timeout' at drivers/qmimodem/qmi.c:1427:2:
ell/util.c:124:9: warning: 'free' called on pointer 'user_data_6(D)' with nonzero offset 28 [-Wfree-nonheap-object]
  124 |         free(ptr);
      |         ^
---
 drivers/qmimodem/qmi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/qmimodem/qmi.c b/drivers/qmimodem/qmi.c
index 5d2553c5..4468761a 100644
--- a/drivers/qmimodem/qmi.c
+++ b/drivers/qmimodem/qmi.c
@@ -1424,7 +1424,9 @@ static void qmux_create_client_timeout(struct l_timeout *timeout,
 
 	/* remove request from queues */
 	find_control_request(qmux, req->super.tid);
-	__request_free(&req->super);
+
+	if (req->super.free_request)
+		req->super.free_request(&req->super);
 }
 
 static void qmux_create_client_callback(struct qmi_request *r,
-- 
2.49.0