[PATCH] msvcrt: Skip small-block heap tests if _set_sbh_threshold is not available.

[Piotr Caban]

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=49181
Signed-off-by: Piotr Caban <piotr(a)codeweavers.com>
---
  dlls/msvcrt/tests/heap.c | 41 +++++++++++++++++++++++++---------------
  1 file changed, 26 insertions(+), 15 deletions(-)