fix startUpdate always false

Author: Links2004

libraries/ESP8266httpUpdate/src/ESP8266httpUpdate.cpp

@@ -146,15 +146,17 @@ t_httpUpdate_return ESP8266HTTPUpdate::handleUpdate(HTTPClient * http, const cha
     switch(code) {
         case HTTP_CODE_OK:  ///< OK (Start Update)
             if(len > 0) {
-                bool startUpdate = false;
+                bool startUpdate = true;
                 if(spiffs) {
                     size_t spiffsSize = ((size_t) &_SPIFFS_end - (size_t) &_SPIFFS_start);
                     if(len > (int) spiffsSize) {
                         DEBUG_HTTP_UPDATE("[httpUpdate] spiffsSize to low (%d) needed: %d\n", spiffsSize, len);
+                        startUpdate = false;
                     }
                 } else {
                     if(len > (int) ESP.getFreeSketchSpace()) {
                         DEBUG_HTTP_UPDATE("[httpUpdate] FreeSketchSpace to low (%d) needed: %d\n", ESP.getFreeSketchSpace(), len);
+                        startUpdate = false;
                     }
                 }