useCache option isn't available in new mixin concept

[mikeatlas]

Hi again.

I'm trying out the mixin changes:

var baseLayer = L.tileLayer(myLayerURL,
      {useCache: true, maxAge: maxAgePouchDBCache, minZoom: 2 });

This throws an exception in

.addInitHook(function(url,opts) {
    if (!opts.useCache) {

because in Leaflet 0.7.3, url and options are not passed as parameters to that method:

// call all constructor hooks
        if (this._initHooks) {
            this.callInitHooks(); // 
        }

URL and options are already part of the instance of the tileLayer.

The code should probably be:

.addInitHook(function() {
    if (!this.options.useCache) {
 // etc

-Mike