fix listassetchains

Author: blackjok3r

listassetchains.py

@@ -13,6 +13,9 @@
     assetchains = json.load(file)
 
 for chain in assetchains:
-    if specific_iguana and chain['iguana'] != specific_iguana:
+    iguana = "blackjok3r"
+    if iguana in chain:
+        iguana = chain['iguana']
+    if specific_iguana and iguana != specific_iguana:
         continue
     print(chain['ac_name'])