Fixed event listener check binding
Fixed event listener check binding

When calling 'hasEvents' from a callback, "this" was not bound to the AD instance, and was defaulting to global scope.  Changing them to '.call's fixes this.
tricerat/node-activedirectory,BenPaster/node-activedirectory,kattsushi/node-activedirectory,jsumners/node-activedirectory,gheeres/node-activedirectory