Log Message:
Add two officially recommended patches to sysutils/dmidecode.

- Fix the condition error in ascii_filter

  The normal printable ASCII range is 32 to 127 (not included),
  so fix the error in this if condition.

- Fix crash with -u option

  A segmentation fault was reported with option -u. Turns out to be a
  stupid thinko where the buffer offset was reset at the wrong loop
  depth.