SSE simd_cast: fix function decl order
SSE simd_cast: fix function decl order

the float_v -> (u)short_v cast uses the int_v -> short_v cast, so put
the latter first

Signed-off-by: Matthias Kretz <372ea4eca737a13cd010ee806d4ce7b98ee71550@kde.org>

chr-engwer/Vc,VcDevel/Vc,VcDevel/Vc,chr-engwer/Vc,VcDevel/Vc,VcDevel/Vc,chr-engwer/Vc