mail-addons/res_partner_mails_count/static/src/js/main.js

openerp.res_partner_mails_count = function(instance){
    instance.mail.Wall.include({
        init: function(){
            this._super.apply(this, arguments);
            if(this.context.ignore_search_model){
                delete this.defaults.model;
            }
        }
    });
};