disable wps by default, enable if its enabled in core#645

Merged

tablatronix merged 1 commit intotzapu:developmentfrom liebman:only_support_wps_if_no_extra_4k_heap_defined

Jul 7, 2018

Commits on Jul 7, 2018

In esp8266/Arduino#4889 the core was modified to
liebman
committed