test: MiniWallet: support default `from_node` for creating txs

If no `from_node` parameter is passed explicitely to the
`create_self_transfer` method, the test node passed in the course
of creating the MiniWallet instance is used.  This seems to
be the main use-case in most of the current functional
tests, i.e. in many instances the calls can be shortened.

1 files changed, 2 insertions, 2 deletions

diff --git a/test/functional/feature_cltv.py b/test/functional/feature_cltv.py
index a6bb8cab76..7fd0d0140b 100755
--- a/test/functional/feature_cltv.py
+++ b/test/functional/feature_cltv.py
@@ -115,7 +115,7 @@ class BIP65Test(BitcoinTestFramework):
         # create one invalid tx per CLTV failure reason (5 in total) and collect them
         invalid_cltv_txs = []
         for i in range(5):
-            spendtx = wallet.create_self_transfer(from_node=self.nodes[0])['tx']
+            spendtx = wallet.create_self_transfer()['tx']
             cltv_invalidate(spendtx, i)
             invalid_cltv_txs.append(spendtx)
 
@@ -146,7 +146,7 @@ class BIP65Test(BitcoinTestFramework):
 
         # create and test one invalid tx per CLTV failure reason (5 in total)
         for i in range(5):
-            spendtx = wallet.create_self_transfer(from_node=self.nodes[0])['tx']
+            spendtx = wallet.create_self_transfer()['tx']
             cltv_invalidate(spendtx, i)
 
             expected_cltv_reject_reason = [