Fix error#109

[ryangrunest]

Changes start in line 126 in the addVariantToCart() function.

[ryangrunest]

Fix for #109

[swalkinshaw]

Thanks @ryangrunest. Is it possible to just get the necessary changes in here? It's really hard to tell what the actual fix is vs other changes.

[enkelmedia]

The diff is impossible to read, what did you change to get this to work?

[enkelmedia]

Ahh, L128, just adding const client = this.props.client;

From:

addVariantToCart(variantId, quantity){
    ...
}

To:

addVariantToCart(variantId, quantity){
    const client = this.props.client;
    ...
}

[enkelmedia]

@swalkinshaw can you just fix this or do you want a new PR?

[swalkinshaw]

I can't push commits to his branch, so if you want to do a new PR then that would be helpful 👍

[enkelmedia]

PR here: #130