continue initial scan until succeeded (solves #596)

src/ebusd/mainloop.cpp

@@ -291,8 +291,7 @@ void MainLoop::run() {
           }
           if (result != RESULT_OK) {
             logError(lf_main, "initial scan failed: %s", getResultCode(result));
-          }
-          if (result != RESULT_ERR_NO_SIGNAL) {
+          } else {
             reload = false;
           }
         }