D17051: Use correct variable type for returned value from read/sendfile

[David Edmundson]

davidedmundson created this revision.
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REVISION SUMMARY
  n stores the read/transferred bytes. This returns a ssize_t.
  We were casting to an int, which theoretically is a loss of data.
  
  In practice it isn't an issue as we only read a max of MAX_IPC_SIZE at a
  time, which would fit in an int.

REPOSITORY
  R241 KIO

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D17051

AFFECTED FILES
  src/ioslaves/file/file_unix.cpp

To: davidedmundson
Cc: kde-frameworks-devel, michaelh, ngraham, bruns
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