fix path for bak file

qa/rpc-tests/wallet-hd.py

@@ -39,8 +39,8 @@ class WalletHDTest(BitcoinTestFramework):
         self.nodes[1].importprivkey(self.nodes[0].dumpprivkey(non_hd_add))
 
         # This should be enough to keep the master key and the non-HD key 
-        self.nodes[1].backupwallet(tmpdir + "hd.bak")
-        #self.nodes[1].dumpwallet(tmpdir + "hd.dump")
+        self.nodes[1].backupwallet(tmpdir + "/hd.bak")
+        #self.nodes[1].dumpwallet(tmpdir + "/hd.dump")
 
         # Derive some HD addresses and remember the last
         # Also send funds to each add
@@ -63,7 +63,7 @@ class WalletHDTest(BitcoinTestFramework):
         print("Restore backup ...")
         self.stop_node(1)
         os.remove(self.options.tmpdir + "/node1/regtest/wallet.dat")
-        shutil.copyfile(tmpdir + "hd.bak", tmpdir + "/node1/regtest/wallet.dat")
+        shutil.copyfile(tmpdir + "/hd.bak", tmpdir + "/node1/regtest/wallet.dat")
         self.nodes[1] = start_node(1, self.options.tmpdir, self.node_args[1])
         #connect_nodes_bi(self.nodes, 0, 1)