Prevent iseof from returning immediately

[andfoy]

Since windows-rs now exposes the original C++ arguments, there was a minor confusion in which the total number of bytes remaining on the output stream handle was not being retrieved. Instead the function returned immediately since the total number of bytes to read was being set to a garbage value

[codecov-commenter]

Codecov Report

Merging #47 (e6dc3ae) into main (409fef9) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main      #47   +/-   ##
=======================================
  Coverage   76.18%   76.18%           
=======================================
  Files           8        8           
  Lines        1243     1243           
=======================================
  Hits          947      947           
  Misses        296      296           

Flag	Coverage Δ
unittests	76.18% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/pty/base.rs	70.27% <100.00%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.