[Kst] [Kst-plot/kst] 87a61a: only log when 0 bytes read from file

[Peter Kümmel]

  Branch: refs/heads/master
  Home:   https://github.com/Kst-plot/kst
  Commit: 87a61a53ebba2a27be712b5003a0eb6414e016a6
      https://github.com/Kst-plot/kst/commit/87a61a53ebba2a27be712b5003a0eb6414e016a6
  Author: Peter Kümmel <syntheticpp at gmx.net>
  Date:   2014-07-20 (Sun, 20 Jul 2014)

  Changed paths:
    M src/datasources/ascii/asciisource.cpp

  Log Message:
  -----------
  only log when 0 bytes read from file