PRBool    firstTime = PR_TRUE;
static PRBool    firstTime = PR_TRUE;
GenerateGlobalRandomBytes(unsigned char *buf, PRInt32 len){  PRBool    firstTime = PR_TRUE;  if (firstTime)  {   /* Seed the random-number generator with current time so that    * the numbers will be different every time we run.    */   PRInt32 aTime;   LL_L2I(aTime, PR_Now());   srand( (unsigned)aTime );   firstTime = PR_FALSE;  }  for( PRInt32 i = 0; i < len; i++ )    buf[i] = rand() % 10;}