message: fix standalone initialization of c rand()
diff: #include <stdio.h>
  #include <string.h>
  #include <omp.h>
  +#include <chrono>
  #ifndef _WIN32
  #include <unistd.h>
  @@ -175,7 +176,8 @@ int main(int argc, char** argv)
  }
  }
  - if (configStandalone.seed != -1) srand(configStandalone.seed);
  + if (configStandalone.seed == -1) srand((int) (std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count()));
  + else srand(configStandalone.seed);
  int trainDist = 0;
  float collisionProbability = 0.;
  