better handle claims which fail to decode

lbrynet/wallet/database.py

@@ -59,7 +59,7 @@ class WalletDatabase(BaseDatabase):
 
         channel_ids = set()
         for txo in txos:
-            if txo.script.is_claim_name or txo.script.is_update_claim:
+            if txo.is_claim and txo.can_decode_claim:
                 if txo.claim.is_signed:
                     channel_ids.add(txo.claim.signing_channel_id)
                 if txo.claim.is_channel and my_account is not None:

lbrynet/wallet/transaction.py

@@ -87,6 +87,13 @@ class Output(BaseOutput):
             return self.script.values['claim']
         raise ValueError('Only claim name and claim update have the claim payload.')
 
+    @property
+    def can_decode_claim(self):
+        try:
+            return self.claim
+        except:
+            return False
+
     @property
     def permanent_url(self) -> str:
         if self.script.is_claim_involved: