add uint8_t * request->_tempBuffer to be used for storing body data or other request specific stuff

src/WebRequest.cpp

@@ -63,6 +63,7 @@ AsyncWebServerRequest::AsyncWebServerRequest(AsyncWebServer* s, AsyncClient* c)
   , _itemBuffer(0)
   , _itemBufferIndex(0)
   , _itemIsFile(false)
+  , _tempBuffer(NULL)
   , next(NULL)
 {
   c->onError([](void *r, AsyncClient* c, int8_t error){ AsyncWebServerRequest *req = (AsyncWebServerRequest*)r; req->_onError(error); }, this);
@@ -93,6 +94,10 @@ AsyncWebServerRequest::~AsyncWebServerRequest(){
     delete _response;
   }
 
+  if(_tempBuffer != NULL){
+    delete _tempBuffer;
+  }
+
 }
 
 void AsyncWebServerRequest::_onData(void *buf, size_t len){