Correct the reading.

Author: papadop

mne/_fiff/tag.py

@@ -361,7 +361,7 @@ def _read_old_pack(fid, tag, shape, rlims):
 
 def _read_dir_entry_struct(fid, tag, shape, rlims):
     """Read dir entry struct tag."""
-    pos = tag.pos
+    pos = tag.pos + 16
     entries = list()
     for offset in range(tag.size // 16):
         ent = _read_tag_header(fid, pos + offset * 16)