message: videoio(test): fix message
diff: @@ -138,7 +138,7 @@ public:
  fprintf(stderr, "\n\nFile name: %s\n", filename.c_str());
  fprintf(stderr, "Codec id: %d Codec tag: %c%c%c%c\n", (int)j,
  tag & 255, (tag >> 8) & 255, (tag >> 16) & 255, (tag >> 24) & 255);
  - fprintf(stderr, "Error: cannot create video file.");
  + fprintf(stderr, "Error: cannot create video file.\n");
  if (entries[j].required)
  ts->set_failed_test_info(ts->FAIL_INVALID_OUTPUT);
  }
  