Can't connect to open network with empty string passphrase

[frishrash]

When empty string is passed as passphrase:

Arduino/libraries/ESP8266WiFi/src/ESP8266WiFiMulti.cpp

Line 218 in 4c04c63

newAP.passphrase = strdup("");

to WiFi.begin():

Arduino/libraries/ESP8266WiFi/src/ESP8266WiFiMulti.cpp

Line 129 in 4c04c63

WiFi.begin(bestNetwork.ssid, bestNetwork.passphrase, bestChannel, bestBSSID);

My ESP8266 (Wemos D1 mini) can't connect to my open access point (OpenWRT).
ESP8266WiFiMulti::run() returns WL_DISCONNECTED with WiFiDisconnectReason of WIFI_DISCONNECT_REASON_NO_AP_FOUND.

When I change the passphrase to NULL everything works.

[d-a-v]

Can you try again with latest git, #5516 might be related.

[devyte]

It is. Closing.