Allocation happens with incorrect alignment

[chung-leong]

error(gpa): Allocation alignment 2 does not match free alignment 1. Allocation: 
 Free: 
/home/cleong/zigar/zigar-compiler/test/integration/function-pointer/generator-with-allocator.zig:27:27: 0x7f447c70b1ed in receive (generator-with-allocator)
            allocator.free(object.real_name);
                          ^
/home/cleong/zigar/node-zigar/node_modules/zigar-compiler/zig/thunk-zig.zig:37:13: 0x7f447c7164ca in invokeFunction (generator-with-allocator)
            const retval = @call(.auto, function, args);
            ^
/home/cleong/zigar/node-zigar/node_modules/zigar-compiler/zig/host-napi.zig:339:21: 0x7f447c703bf1 in runThunk (generator-with-allocator)
    return if (thunk(fn_ptr, arg_ptr)) .ok else |_| .failure;
                    ^
???:?:?: 0x7f44a41bfc0f in ??? (linux.x64.node)
???:?:?: 0xc3a2f8 in ??? (???)
???:?:?: 0xf29f4e in ??? (???)