Merge #325: Bugfix crash on unexpected error from gettransaction call.

3045370 Bugfix crash on unexpected error from gettransaction call. (AdamISZ)

jmclient/jmclient/blockchaininterface.py

@@ -688,10 +688,12 @@ class BitcoinCoreInterface(BlockchainInterface):
                     res = self.rpc("gettransaction", [tx["txid"], 1])
                 except JsonRpcError as e:
                     #This should never happen (gettransaction is a wallet rpc).
-                    log.info("Failed any gettransaction call")
+                    log.warn("Failed gettransaction call; JsonRpcError")
                     res = None
                 except Exception as e:
-                    log.info(str(e))
+                    log.warn("Failed gettransaction call; unexpected error:")
+                    log.warn(str(e))
+                    res = None
             if not res:
                 continue
             if "confirmations" not in res: