only report .BEGIN on success

Author: mpkarpov-ui

MIDAS/src/hilsim/stream/main.cpp

@@ -264,13 +264,14 @@ int main(int argc, char** argv) {
             case 'r':
                 // r(ealtime) -- streams data to com port in real time
                 {
-                    printf(".BEGIN\n");
                     fflush(stdout);
                     if (!inptr) {
                         std::cerr << "No file specified" << std::endl;
                         break;
                     }
 
+                    printf(".BEGIN\n");
+
                     if (outptr) {
                         fputs(".KAMAJI_STREAM\n", outptr);
                         fprintf(outptr, ".CHECKSUM %X\n", _inf_checksum);