Directly loading invalid LocalStorage record throws an exception

Directly loading an invalid LocalStorage record throws an exception instead of calling provided failure callback.

I am attempting to check if a record is in local storage on startup using something like the following test case. Instead of calling the failure callback an error is being thrown.

WebStorage.js:201
Uncaught TypeError: Cannot read property 'id' of null

Code:

---

        Ext.define('User', {
            extend: 'Ext.data.Model',
            fields: ['id', 'name'],
            proxy: {
                type: 'localstorage',
                id: 'user'
            }
        });
       
        Ext.onReady(function() {
            var User = Ext.ModelManager.getModel('User');

            User.load(1, {
                success: function(user) {
                    console.dir(user);
                },
                failure: function() {
                    console.log('Failure');
                }
            });
        });

---

Here’s how you can detect localStorage support:

// Feature test
var hasStorage = (function() {
try {
localStorage.setItem(mod, mod);
localStorage.removeItem(mod);
return true;
} catch(e) {
return false;
}
}());
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