wasm2js: Fix unaligned loads and stores (#2015)
wasm2js: Fix unaligned loads and stores (#2015)

We forgot to set them as unsigned, which meant that we were reading uninitialized memory when checking that field, which mostly worked, except if it previously contained something...
WebAssembly/binaryen,WebAssembly/binaryen,WebAssembly/binaryen,WebAssembly/binaryen,WebAssembly/binaryen