[refactor] get wtxid from entry instead of vTxHashes

src/rpc/mempool.cpp

@@ -289,7 +289,7 @@ static void entryToJSON(const CTxMemPool& pool, UniValue& info, const CTxMemPool
     info.pushKV("descendantsize", e.GetSizeWithDescendants());
     info.pushKV("ancestorcount", e.GetCountWithAncestors());
     info.pushKV("ancestorsize", e.GetSizeWithAncestors());
-    info.pushKV("wtxid", pool.vTxHashes[e.vTxHashesIdx].first.ToString());
+    info.pushKV("wtxid", e.GetTx().GetWitnessHash().ToString());
 
     UniValue fees(UniValue::VOBJ);
     fees.pushKV("base", ValueFromAmount(e.GetFee()));