[PATCH] msvcrt: Fix acosf implementation when returning Pi or Pi/2.

[Piotr Caban]

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=49718
Signed-off-by: Piotr Caban <piotr(a)codeweavers.com>
---
  dlls/msvcrt/math.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)