[1/2] comctl32/treeview: Use a code set by dispinfo holder to convert data encoding after TVN_GETDISPINFO

[Marvin]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?
Full results can be found at
http://testbot.winehq.org/JobDetails.pl?Key=7104

Your paranoid android.


=== WVISTAADM (32 bit treeview) ===
treeview.c:1349: Test failed: got 0xffffffff
treeview.c:1355: Test failed: got 0xffffffff