WebAssembly + Custom Runtime + Associative Arrays

[Remi]

Hi all,

I've been trying to compile a game project to WebAssembly for a 
while. It had been going quite well but I'm hitting an issue with 
associative arrays now and I don't know if it's a compiler bug or 
something on my side.

I uploaded some code with a broken example here: 
https://github.com/speps/dwasmaa

If you clone it then run a HTTP server and navigate to index.htm, 
it will output the wrong message as described in the README.

If you compile+run it with `dub --arch=x86` it displays the 
correct message (sorry that arch only works in Windows for now as 
I'm not using the runtime and only hooked up Win32 API console 
output).

Anyway, where am I going wrong? Thanks.

- Remi Gillig.