[Stable-9.0.3 51/69] net: Fix '-net nic, model=' for non-help arguments

[Michael Tokarev]

From: David Woodhouse <dwmw@amazon.co.uk>

Oops, don't *delete* the model option when checking for 'help'.

Fixes: 64f75f57f9d2 ("net: Reinstate '-net nic, model=help' output as 
documented in man page")
Reported-by: Hans <sungdgdhtryrt@gmail.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Cc: qemu-stable@nongnu.org
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit fa62cb989a9146c82f8f172715042852f5d36200)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

diff --git a/net/net.c b/net/net.c
index e6ca2529bb..897bb936cf 100644
--- a/net/net.c
+++ b/net/net.c
@@ -1748,7 +1748,7 @@ void net_check_clients(void)
 
 static int net_init_client(void *dummy, QemuOpts *opts, Error **errp)
 {
-    const char *model = qemu_opt_get_del(opts, "model");
+    const char *model = qemu_opt_get(opts, "model");
 
     if (is_nic_model_help_option(model)) {
         return 0;
-- 
2.39.2