net: The third parameter of getsockname should be initialized

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

net/socket.c

diff --git a/net/socket.c b/net/socket.c
index fb21e20..ca4b8ba 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -352,7 +352,7 @@
 {
     struct sockaddr_in saddr;
     int newfd;
-    socklen_t saddr_len;
+    socklen_t saddr_len = sizeof(saddr);
     NetClientState *nc;
     NetSocketState *s;