Bugfix: Cannot duplicate userpass option or we end up with it processed double

miner.c

@@ -1159,9 +1159,9 @@ static struct opt_table opt_config_table[] = {
 	OPT_WITHOUT_ARG("--per-device-stats",
 			opt_set_bool, &want_per_device_stats,
 			"Force verbose mode and output per-device statistics"),
-	OPT_WITH_ARG("--userpass|-O",  // duplicate to ensure config loads it before pool-priority
+	OPT_WITH_ARG("--userpass|-O",
 	             set_userpass, NULL, NULL,
-	             opt_hidden),
+	             "Username:Password pair for bitcoin JSON-RPC server"),
 	OPT_WITH_ARG("--pool-priority",
 			 set_pool_priority, NULL, NULL,
 			 "Priority for just the previous-defined pool"),
@@ -1289,9 +1289,6 @@ static struct opt_table opt_config_table[] = {
 		     set_worksize, NULL, NULL,
 		     "Override detected optimal worksize - one value or comma separated list"),
 #endif
-	OPT_WITH_ARG("--userpass|-O",
-		     set_userpass, NULL, NULL,
-		     "Username:Password pair for bitcoin JSON-RPC server"),
 	OPT_WITHOUT_ARG("--worktime",
 			opt_set_bool, &opt_worktime,
 			"Display extra work time debug information"),