D18574: Fix various OOB reads and writes in kimg_tga and kimg_xcf

[Fabian Vogt]

fvogt edited the summary of this revision.
fvogt edited the test plan for this revision.

REPOSITORY
  R287 KImageFormats

REVISION DETAIL
  https://phabricator.kde.org/D18574

To: fvogt, aacid
Cc: lbeltrame, kde-frameworks-devel, michaelh, ngraham, bruns