[PATCH 3/3] mshtml: Make xhr.open async argument optional in IE9+ mode.

[Jacek Caban]

Signed-off-by: Jacek Caban <jacek(a)codeweavers.com>
---
  dlls/mshtml/tests/documentmode.js | 14 ++++++++++++
  dlls/mshtml/xmlhttprequest.c      | 38 +++++++++++++++++++++++++++++--
  2 files changed, 50 insertions(+), 2 deletions(-)