fix test_pair_vsock

Author: remijouannet

tests/test_pair_vsock.cpp

@@ -18,10 +18,9 @@ void test_pair_vsock ()
     int vsock;
 
     if ((vsock = open ("/dev/vsock", O_RDONLY, 0)) < 0) {
-        printf ("open(\"/dev/vsock\", ...): %d\n", errno);
+        TEST_IGNORE_MESSAGE ("failed to open /dev/vsock, skipping test");
     } else if (ioctl (vsock, IOCTL_VM_SOCKETS_GET_LOCAL_CID, &cid) < 0) {
-        printf ("ioctl(%d, IOCTL_VM_SOCKETS_GET_LOCAL_CID, ...): %d\n", vsock,
-                errno);
+        TEST_IGNORE_MESSAGE ("failed to get local cid, skipping test");
     }
 
     if (vsock >= 0) {