scripted-diff: use self.sync_* methods

-BEGIN VERIFY SCRIPT-
sed -i -e 's/sync_blocks(self.nodes)/self.sync_blocks()/g'     $(git grep -l 'sync_blocks(self.nodes)'   ./test/functional/*.py)
sed -i -e 's/sync_mempools(self.nodes)/self.sync_mempools()/g' $(git grep -l 'sync_mempools(self.nodes)' ./test/functional/*.py)

sed -i -e 's/  sync_blocks(/  self.sync_blocks(/g'     $(git grep -l sync_blocks   ./test/functional/*.py)
sed -i -e 's/  sync_mempools(/  self.sync_mempools(/g' $(git grep -l sync_mempools ./test/functional/*.py)
-END VERIFY SCRIPT-

1 files changed, 2 insertions, 2 deletions

diff --git a/test/functional/wallet_txn_doublespend.py b/test/functional/wallet_txn_doublespend.py
index 8dcfd74f56..31b5494fe6 100755
--- a/test/functional/wallet_txn_doublespend.py
+++ b/test/functional/wallet_txn_doublespend.py
@@ -86,7 +86,7 @@ class TxnMallTest(BitcoinTestFramework):
         # Have node0 mine a block:
         if (self.options.mine_block):
             self.nodes[0].generate(1)
-            sync_blocks(self.nodes[0:2])
+            self.sync_blocks(self.nodes[0:2])
 
         tx1 = self.nodes[0].gettransaction(txid1)
         tx2 = self.nodes[0].gettransaction(txid2)
@@ -119,7 +119,7 @@ class TxnMallTest(BitcoinTestFramework):
         # Reconnect the split network, and sync chain:
         connect_nodes(self.nodes[1], 2)
         self.nodes[2].generate(1)  # Mine another block to make sure we sync
-        sync_blocks(self.nodes)
+        self.sync_blocks()
         assert_equal(self.nodes[0].gettransaction(doublespend_txid)["confirmations"], 2)
 
         # Re-fetch transaction info: