Reduce code duplication in sampgdk_native_invoke()
Reduce code duplication in sampgdk_native_invoke()

Implement sampgdk_native_invoke() on top of
sampgdk_native_invoke_array() by building a temporary array of pointers
to arguments (actually two arrays).

WopsS/sampgdk,Zeex/sampgdk,WopsS/sampgdk,WopsS/sampgdk,Zeex/sampgdk,Zeex/sampgdk