fixes for WiFiClient::write(Stream) #7987
Merged
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WiFiClient::write(Stream,size)WiFiClient::write(Stream)to useStream::sendAllinstead of::sendAvailableESP8266WebServer::streamFileto usefile.sendAll(client)instead ofclient.write(file)fixes #7982
edit:
Streamdependency inClientContext::fixes #7991
edit2: 212 flash bytes are saved when compiling mcve from #7991