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/rpc_preciousblock.py b/test/functional/rpc_preciousblock.py
index da228df9c3..46f1922891 100755
--- a/test/functional/rpc_preciousblock.py
+++ b/test/functional/rpc_preciousblock.py
@@ -72,7 +72,7 @@ class PreciousTest(BitcoinTestFramework):
         assert_equal(self.nodes[0].getbestblockhash(), hashC)
         self.log.info("Make Node1 prefer block C")
         self.nodes[1].preciousblock(hashC)
-        sync_blocks(self.nodes[0:2])  # wait because node 1 may not have downloaded hashC
+        self.sync_blocks(self.nodes[0:2])  # wait because node 1 may not have downloaded hashC
         assert_equal(self.nodes[1].getbestblockhash(), hashC)
         self.log.info("Make Node1 prefer block G again")
         self.nodes[1].preciousblock(hashG)
@@ -86,7 +86,7 @@ class PreciousTest(BitcoinTestFramework):
         self.log.info("Mine another block (E-F-G-)H on Node 0 and reorg Node 1")
         self.nodes[0].generatetoaddress(1, gen_address(0))
         assert_equal(self.nodes[0].getblockcount(), 6)
-        sync_blocks(self.nodes[0:2])
+        self.sync_blocks(self.nodes[0:2])
         hashH = self.nodes[0].getbestblockhash()
         assert_equal(self.nodes[1].getbestblockhash(), hashH)
         self.log.info("Node1 should not be able to prefer block C anymore")