Fix mkinitrd, add vfs_initrd stub
diff --git a/include/initrd/initrd.h b/include/initrd/initrd.h
index e095f34..c0a8d18 100644
--- a/include/initrd/initrd.h
+++ b/include/initrd/initrd.h
@@ -12,6 +12,6 @@
 {
 	char name[64];
 	unsigned long size;
-};
+} __attribute__((packed));
 
 /* that's it! */