Don't panic on sync, based on changes from ext2fs_vfsops.c and ffs_vfsops.c
Don't panic on sync, based on changes from ext2fs_vfsops.c and ffs_vfsops.c

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars