fixed state transition issue in FirmwareService that leads to abortin…

…g a running update process when in download phase

src/MicroOcpp/Model/FirmwareManagement/FirmwareService.cpp

@@ -111,8 +111,8 @@ void FirmwareService::loop() {
 
                     timestampTransition = mocpp_tick_ms();
                     delayTransition = 10000;
-                    return;
                 }
+                return;
             } else {
                 //if client doesn't report download state, assume download to be finished (at least 30s download time have passed until here)
                 if (downloadStatusInput == nullptr) {