Use "p->sum -= checksum()" style for setting checksums.

Some code cleared the original checksum and then calculated a new one,
    others manipulated the checksum range to not include the old
    checksum.  However, this was error prone - use the "-=" syntax
    consistently to reduce possible errors.
8 files changed
tree: c3fdb8f37722b1737c4a83ea02f7a5542549410e
  1. .gitignore
  2. COPYING
  3. COPYING.LESSER
  4. Makefile
  5. README
  6. TODO
  7. src/
  8. tools/
  9. vgasrc/