Bug 1027300: Check for ioctl error return. r=mt

media/mtransport/third_party/nICEr/src/stun/addrs.c

@@ -615,6 +615,12 @@ stun_get_siocgifconf_addrs(nr_local_addr addrs[], int maxaddrs, int *count)
    ifc.ifc_buf = buf;
 
    e = ioctl(s,SIOCGIFCONF,&ifc);
+
+   if ( e == -1 )
+   {
+      return(R_INTERNAL);
+   }
+
    ptr = buf;
    tl = ifc.ifc_len;
    n=0;