[PATCH] msvcrt: Reset buffer in fflush on error.

[Piotr Caban]

Signed-off-by: Piotr Caban <piotr(a)codeweavers.com>
---
  dlls/msvcrt/file.c       | 11 ++++++-----
  dlls/msvcrt/tests/file.c | 18 +++++++++++++++++-
  2 files changed, 23 insertions(+), 6 deletions(-)