Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging

# gpg: Signature made Fri 15 Jun 2018 03:47:09 BST
# gpg:                using RSA key EF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F  3562 EF04 965B 398D 6211

* remotes/jasowang/tags/net-pull-request:
  vhost-user: delete net client if necessary
  e1000e: Do not auto-clear ICR bits which aren't set in EIAC
  net: Fix a potential segfault
  tap: set vhostfd passed from qemu cli to non-blocking

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/net/net.c b/net/net.c
index efb9eaf779..2a3133990c 100644
--- a/net/net.c
+++ b/net/net.c
@@ -1093,7 +1093,9 @@ static int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp)
     int ret = -1;
     Visitor *v = opts_visitor_new(opts);
 
-    if (is_netdev && is_help_option(qemu_opt_get(opts, "type"))) {
+    const char *type = qemu_opt_get(opts, "type");
+
+    if (is_netdev && type && is_help_option(type)) {
         show_netdevs();
         exit(0);
     } else {