Fixed (pool) algo selection.

sgminer.c

@@ -1063,7 +1063,7 @@ static void load_temp_cutoffs()
 
 static char *set_algo(const char *arg)
 {
-	if (json_array_index < 0) {
+	if ((json_array_index < 0) || (total_pools == 0)) {
 		set_algorithm(opt_algorithm, arg);
 		applog(LOG_INFO, "Set default algorithm to %s", opt_algorithm->name);
 	} else {
@@ -1075,7 +1075,7 @@ static char *set_algo(const char *arg)
 
 static char *set_nfactor(const char *arg)
 {
-	if (json_array_index < 0) {
+	if ((json_array_index < 0) || (total_pools == 0)) {
 		set_algorithm_nfactor(opt_algorithm, (const uint8_t) atoi(arg));
 		applog(LOG_INFO, "Set algorithm N-factor to %d (N to %d)",
 		       opt_algorithm->nfactor, opt_algorithm->n);