fwin: prevent segv when the vaarg abi messup with unused parameter.
fwin: prevent segv when the vaarg abi messup with unused parameter.

Quite a hack overall, but if you don't need those parameter, just put
nothing and it will work.

@fix T4112

Signed-off-by: Cedric Bail <240633aa59d25638de9800ef43a88ad2e208d24d@osg.samsung.com>

rvandegrift/e,rvandegrift/e,rvandegrift/e