[PATCH] mshtml: Ignore attempts to set read only builtin properties in IE9+ mode.

[Jacek Caban]

Signed-off-by: Jacek Caban 
---
  dlls/mshtml/dispex.c     | 4 ++++
  dlls/mshtml/tests/es5.js | 5 +++++
  2 files changed, 9 insertions(+)