Avoids a compile error from start.zig:
/home/kivikakk/zig/build/lib/zig/std/start.zig:265:28: error:
expected type 'u8', found 'i8'
return result;
^
/home/kivikakk/zig/build/lib/zig/std/start.zig:265:28: note:
unsigned 8-bit int cannot represent all possible signed 8-bit
values
return result;
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