SAVENAME was retired by D36542 <https://reviews.freebsd.org/D36542>.
Bug 267079 <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=267079> involved failures to build four ports, for VirtualBox guest additions, on FreeBSD-CURRENT:
emulators/virtualbox-ose-additions
emulators/virtualbox-ose-additions-legacy
emulators/virtualbox-ose-additions-nox11
emulators/virtualbox-ose-additions-nox11-legacy
Fix bug 267079 for CURRENT 1400068 and greater by hiding the use of SAVENAME in patch-src_VBox_Additions_freebsd_vboxvfs_vboxvfs__vnops.c for:
emulators/virtualbox-ose
emulators/virtualbox-ose-legacy