Reacted on warnings of Debian buildd with clang

xorriso/iso_manip.c

@@ -1323,7 +1323,7 @@ int Xorriso_rmi(struct XorrisO *xorriso, void *boss_iter, off_t boss_mem,
                 char *path, int flag)
 {
  int ret, is_dir= 0, pl, not_removed= 0, fret;
- IsoNode *victim_node, *node;
+ IsoNode *victim_node= NULL, *node;
  IsoDir *boss_node, *root_dir;
  IsoDirIter *iter= NULL;
  IsoImage *volume;