Main has unused parameters argc and argv. Since they are unused and
C 99 allows to prototype main as 'int main(void)',
remove them and replace by void. It fixes build when unused parameters
are treated as errors.
Signed-off-by: Marek Chalupa <mchqwerty@gmail.com> Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>