New -findx -exec action "empty_iso_dir", workaround for ticket 132

xorriso/xorrisoburn.h

@@ -78,7 +78,7 @@ int Xorriso_format_media(struct XorrisO *xorriso, int flag);
                2 = removed directory or tree
                3 = did not remove on user revocation
 */
-int Xorriso_rmi(struct XorrisO *xorriso, void *boss_iter,
+int Xorriso_rmi(struct XorrisO *xorriso, void *boss_iter, off_t boss_mem,
                 char *path, int flag);
 
 /* @param flag bit0= long format