Merge #9697: [Qt] simple fee bumper with user verification

a38783747 Make sure we re-check the conditions of a feebump during commit (Jonas Schnelli)
9b9ca538c Only update the transactionrecord if the fee bump has been commited (Jonas Schnelli)
6ed4368f1 Make sure we use nTxConfirmTarget during Qt fee bumps (Jonas Schnelli)
be08fc39d Make sure we always update the table row after a bumpfee call (Jonas Schnelli)
2678d3dc6 Show old-fee, increase a new-fee in Qt fee bumper confirmation dialog (Jonas Schnelli)
2ec911f60 Add cs_wallet lock assertion to SignTransaction() (Jonas Schnelli)
fbf385cc8 [Qt] simple fee bumper with user verification (Jonas Schnelli)

Tree-SHA512: a3ce626201abf64cee496dd1d83870de51ba633de40c48eb0219c3eba5085c038af34c284512130d2544de20c1bff9fea1b78f92e3574c21dd4e96c11b8e7d76

src/wallet/wallet.cpp

@@ -2311,6 +2311,8 @@ bool CWallet::SelectCoins(const std::vector<COutput>& vAvailableCoins, const CAm
 
 bool CWallet::SignTransaction(CMutableTransaction &tx)
 {
+    AssertLockHeld(cs_wallet); // mapWallet
+
     // sign the new tx
     CTransaction txNewConst(tx);
     int nIn = 0;