Fix si570avrusb.c

rigs/kit/si570avrusb.c

@@ -962,7 +962,7 @@ int si570xxxusb_get_conf2(RIG *rig, token_t token, char *val, int val_len)
 
 int si570xxxusb_get_conf(RIG *rig, token_t token, char *val)
 {
-    return si570xxusb_get_conf2(rig, token val, 128);
+    return si570xxusb_get_conf2(rig, token, val, 128);
 }