h4h5tools

Purpose:
    [is this a bug fix? feature? ...]
    bug fix
Description:
    [describe the bug, or describe the new feature, etc]
    some memory leaking are found through purify
Solution:
    [details about the changes, algorithm, etc...]
    [Please as detail as you can since your own explanation is
    better than others guessing it from the code.]
    Fix them.
Platforms tested:
linux, solaris 2.7, IBM AIX 5.1
    [machines you have tested the changed version.  This is absolute
    important.  Test it out on at least two or three different platforms
    such as Big-endian-32bit (SUN/IRIX), little-endian-32(LINUX) and
    64-bit (IRIX64/UNICOS/DEC-ALPHA) would be good.]