finally get travis build without errors

tests/test/host/ehci/test_ehci_structure.c

diff --git a/tests/test/host/ehci/test_ehci_structure.c b/tests/test/host/ehci/test_ehci_structure.c
index fdaa660..deb3d38 100644
--- a/tests/test/host/ehci/test_ehci_structure.c
+++ b/tests/test/host/ehci/test_ehci_structure.c
@@ -100,7 +100,7 @@
 {
   if (4 < sizeof(void*)) // running tests in x64 environment
   {
-    TEST_ASSERT_EQUAL( 64 - 2*sizeof(void*), offsetof(ehci_qhd_t, p_qtd_list_head) );
+    TEST_ASSERT_EQUAL( 64 - 8, offsetof(ehci_qhd_t, p_qtd_list_head) ); // 64 - 2x 32-bit pointer qtds
   }else
   {
     TEST_ASSERT_EQUAL( 64, sizeof(ehci_qhd_t) );