difxapi: add stubs for SetDifxLogCallbackA/W

[Stefan Leichter]

fixes https://bugs.winehq.org/show_bug.cgi?id=35670

---
 dlls/difxapi/difxapi.spec |    2 ++
 dlls/difxapi/main.c       |   10 ++++++++++
 include/difxapi.h         |    4 ++++
 3 files changed, 16 insertions(+)

-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0001-difxapi-add-stubs-for-SetDifxLogCallbackA-W.txt
Type: text/x-patch
Size: 1969 bytes
Desc: not available
URL: <http://www.winehq.org/pipermail/wine-patches/attachments/20141125/28971c19/attachment.bin>