Does not parse the word void

[Lucas Menezes]

The examples I tried:

$ ./mzcc --dump-ast
void main() {
parser.c:794: Type expected, but got void
$ ./mzcc --dump-ast
void main(void) {}
parser.c:794: Type expected, but got void
$ ./mzcc --dump-ast
int main(void) {
parser.c:794: Type expected, but got void