[PATCH v2] msvcrt: Avoid depending on signed variable overflow in parse_double.

[Piotr Caban]

Signed-off-by: Piotr Caban <piotr(a)codeweavers.com>
---
  dlls/msvcrt/string.c | 8 ++++++--
  1 file changed, 6 insertions(+), 2 deletions(-)