Parameters in a POST URL that has empty content are not parsed

[teejaydub]

Basic Infos

Hardware

Hardware: ESP-8266
Core Version: 2.4.0-rc1

Description

When an ESP8266WebServer receives a POST request that just consists of a URL with parameters, but no content, its URL is not parsed for parameters.

This is reproducible using this example from the Blynk project but it affects any project that uses the WebServer class and requires simple POST requests like:

POST http://example.com/?param=value

with an empty body.