Properly initialize struct irec pointers after malloc()

Failing to properly initialize struct irec pointers to NULL after
malloc()ing structs that contain them makes subsequent comparison
of said pointers to NULL unreliable, to say the least.

Bug: 21411241
Change-Id: Id51c17a013250a5a80c867f7e074a70e0e3cc5e3
diff --git a/src/network.c b/src/network.c
index f2ccf34..c7431df 100755
--- a/src/network.c
+++ b/src/network.c
@@ -309,6 +309,7 @@
   l->tcpfd = tcpfd;
   l->tftpfd = -1;
   l->family = AF_INET6;
+  l->iface = NULL;
   l->next = NULL;
   *link = l;
   
@@ -381,6 +382,7 @@
   l->fd = fd;
   l->tcpfd = tcpfd;
   l->tftpfd = tftpfd;
+  l->iface = NULL;
   l->next = l6;
 
   return l;