Merge #11203: rpc: add wtxid to mempool entry output

617c459c6 qa: rpc test for wtxid in mempool entry (Suhas Daftuar)
7e5d5965d RPC: add wtxid to mempool entry output (Suhas Daftuar)

Pull request description:

  We already cache this information in the mempool, so including it in the output of rpc calls is basically free.

Tree-SHA512: 2757e1bfca028103937e4b76ce1a5d805846bad5d3d9dd631dcc5f87721bcc0e9d19e437e02053ef1dd3b38b503f0fca8c0b8492cac37dfbd70256a3665f704c

test/functional/segwit.py

@@ -279,6 +279,9 @@ class SegWitTest(BitcoinTestFramework):
         assert(txid2 in template_txids)
         assert(txid3 in template_txids)
 
+        # Check that wtxid is properly reported in mempool entry
+        assert_equal(int(self.nodes[0].getmempoolentry(txid3)["wtxid"], 16), tx.calc_sha256(True))
+
         # Mine a block to clear the gbt cache again.
         self.nodes[0].generate(1)