use wificlient.available() where relevant (#6827)

Author: d-a-v

libraries/ArduinoOTA/ArduinoOTA.cpp

@@ -303,7 +303,7 @@ void ArduinoOTAClass::_runUpdate() {
   client.setNoDelay(true);
 
   uint32_t written, total = 0;
-  while (!Update.isFinished() && client.connected()) {
+  while (!Update.isFinished() && (client.connected() || client.available())) {
     int waited = 1000;
     while (!client.available() && waited--)
       delay(1);

libraries/ESP8266WebServer/src/ESP8266WebServer-impl.h

@@ -319,7 +319,7 @@ void ESP8266WebServerTemplate<ServerType>::handleClient() {
   bool keepCurrentClient = false;
   bool callYield = false;
 
-  if (_currentClient.connected()) {
+  if (_currentClient.connected() || _currentClient.available()) {
     switch (_currentStatus) {
     case HC_NONE:
       // No-op to avoid C++ compiler warning