Fix a crash happening before budget activation and bump Dash proto ve…

…rsion (#61)

* Check for 'payee' being in the 'masternode' object first before using it

For some reason, old 12.3.x versions have an empty 'masternode' object
in the block template before the budget activates. This is only happening
when resetting testnet, but might also be a problem in the future when
used on devnets.

* Bump proto version to 70213

As used on the new testnet and later on mainnet.

p2pool/dash/helper.py

@@ -63,11 +63,12 @@ def go():
 
     for obj in payment_objects:
         g={}
-        g['payee'] = str(obj['payee'])
-        g['amount'] = obj['amount']
-        if g['amount'] > 0:
-            payment_amount += g['amount']
-            packed_payments.append(g)
+        if 'payee' in obj:
+            g['payee'] = str(obj['payee'])
+            g['amount'] = obj['amount']
+            if g['amount'] > 0:
+                payment_amount += g['amount']
+                packed_payments.append(g)
 
     coinbase_payload = None
     if 'coinbase_payload' in work and len(work['coinbase_payload']) != 0:

p2pool/dash/p2p.py

@@ -19,7 +19,7 @@ def __init__(self, net):
 
     def connectionMade(self):
         self.send_version(
-            version=70212,
+            version=70213,
             services=1,
             time=int(time.time()),
             addr_to=dict(