Binding cleanup fails with null values

[evant]

Affects Ext 6.6 and probably earlier versions.

Test case: https://fiddle.sencha.com/#view/editor&fiddle/2jbm

[evant]

Since this hasn't been getting much attention, fix below:

const fn = function() {
    var me = this,
        bindings, key, binding;

    if (me.$hasBinds) {
        bindings = me.getBind();
        if (bindings && typeof bindings !== 'string') {
            for (key in bindings) {
                binding = bindings[key];
                if (binding) {
                    binding.destroy();
                    binding._config = binding.getTemplateScope = null;
                }
            }
        }
    }
    me.setBind(null);
};

// Classic Only
Ext.define(null, {
    override: 'Ext.Component',

    privates: {
        removeBindings: fn
    }
});

// Needed for both toolkits
Ext.define(null, {
    override: 'Ext.Widget',

    privates: {
        removeBindings: fn
    }
});

[guilherme.lopes]

Thanks for the report! I have opened a bug in our bug tracker.