PR24067 follow-ups

[maflcko]

Some follow up ideas for bitcoin/bitcoin#24067

• Remove now unused open_for
• Use C++11 member initializers
• Fix whitespace

Useful skills:

• Building Bitcoin Core GUI
• C++

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[maflcko]

This is the diff I drafted, but it needs to be split into separate commits, ideally:

diff --git a/src/qt/transactiondesc.cpp b/src/qt/transactiondesc.cpp
index be5851d627..4f18c58b20 100644
--- a/src/qt/transactiondesc.cpp
+++ b/src/qt/transactiondesc.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2011-2021 The Bitcoin Core developers
+// Copyright (c) 2011-2022 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -34,18 +34,16 @@ using wallet::isminetype;
 
 QString TransactionDesc::FormatTxStatus(const interfaces::WalletTx& wtx, const interfaces::WalletTxStatus& status, bool inMempool, int numBlocks)
 {
-    {
-        int nDepth = status.depth_in_main_chain;
-        if (nDepth < 0) {
-            return tr("conflicted with a transaction with %1 confirmations").arg(-nDepth);
-        } else if (nDepth == 0) {
-            const QString abandoned{status.is_abandoned ? QLatin1String(", ") + tr("abandoned") : QString()};
-            return tr("0/unconfirmed, %1").arg(inMempool ? tr("in memory pool") : tr("not in memory pool")) + abandoned;
-        } else if (nDepth < 6) {
-            return tr("%1/unconfirmed").arg(nDepth);
-        } else {
-            return tr("%1 confirmations").arg(nDepth);
-        }
+    int nDepth = status.depth_in_main_chain;
+    if (nDepth < 0) {
+        return tr("conflicted with a transaction with %1 confirmations").arg(-nDepth);
+    } else if (nDepth == 0) {
+        const QString abandoned{status.is_abandoned ? QLatin1String(", ") + tr("abandoned") : QString()};
+        return tr("0/unconfirmed, %1").arg(inMempool ? tr("in memory pool") : tr("not in memory pool")) + abandoned;
+    } else if (nDepth < 6) {
+        return tr("%1/unconfirmed").arg(nDepth);
+    } else {
+        return tr("%1 confirmations").arg(nDepth);
     }
 }
 
diff --git a/src/qt/transactionrecord.h b/src/qt/transactionrecord.h
index dd34656d5f..b2912f17c9 100644
--- a/src/qt/transactionrecord.h
+++ b/src/qt/transactionrecord.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011-2021 The Bitcoin Core developers
+// Copyright (c) 2011-2022 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -20,13 +20,7 @@ struct WalletTxStatus;
 
 /** UI model for transaction status. The transaction status is the part of a transaction that will change over time.
  */
-class TransactionStatus
-{
-public:
-    TransactionStatus() : countsForBalance(false), sortKey(""),
-                          matures_in(0), status(Unconfirmed), depth(0), open_for(0)
-    { }
-
+struct TransactionStatus {
     enum Status {
         Confirmed,          /**< Have 6 or more confirmations (normal tx) or fully mature (mined tx) **/
         /// Normal (sent/received) transactions
@@ -40,22 +34,19 @@ public:
     };
 
     /// Transaction counts towards available balance
-    bool countsForBalance;
+    bool countsForBalance{false};
     /// Sorting key based on status
-    std::string sortKey;
+    std::string sortKey{};
 
     /** @name Generated (mined) transactions
        @{*/
-    int matures_in;
+    int matures_in{0};
     /**@}*/
 
     /** @name Reported status
        @{*/
-    Status status;
-    qint64 depth;
-    qint64 open_for; /**< Timestamp if status==OpenUntilDate, otherwise number
-                      of additional blocks that need to be mined before
-                      finalization */
+    Status status{Unconfirmed};
+    qint64 depth{0};
     /**@}*/
 
     /** Current block hash (to know whether cached status is still valid) */