Excess elements in struct initializer

[a3moss]

If I try to default-construct a struct with no elements using an empty initializer, the generated code inserts a zero into the initializer, making a warning -- GCC finishes silently on the same code:

struct tag {};

int main() {
    struct tag t = {};
}

Error:

CFA Version 1.0.0 (debug)
tag_struct.c: In function ‘__main__Fi___1’:
tag_struct.c:5:33: warning: excess elements in struct initializer
 }
                                 ^
tag_struct.c:5:33: note: (near initialization for ‘__t__4stag_2’)

[Rob Schluntz <rschlunt@…>]

In 01b9928:

permit empty initializer lists [fixes #12]