consequence of ::flush() update: fix potential double free (#3990)
consequence of ::flush() update: fix potential double free (#3990)


sticilface/Arduino,wemos/Arduino,hallard/Arduino,Lan-Hekary/Arduino,lrmoreno007/Arduino,wemos/Arduino,Lan-Hekary/Arduino,sticilface/Arduino,hallard/Arduino,lrmoreno007/Arduino,Adam5Wu/Arduino,sticilface/Arduino,lrmoreno007/Arduino,Adam5Wu/Arduino,wemos/Arduino,sticilface/Arduino,hallard/Arduino,hallard/Arduino,lrmoreno007/Arduino,esp8266/Arduino,esp8266/Arduino,Lan-Hekary/Arduino,hallard/Arduino,Adam5Wu/Arduino,sticilface/Arduino,Lan-Hekary/Arduino,esp8266/Arduino,Adam5Wu/Arduino,esp8266/Arduino,Lan-Hekary/Arduino,wemos/Arduino,esp8266/Arduino,lrmoreno007/Arduino,wemos/Arduino,Adam5Wu/Arduino