Logprint the start of a rescan

src/wallet/wallet.cpp

@@ -1714,6 +1714,9 @@ CBlockIndex* CWallet::ScanForWalletTransactions(CBlockIndex* pindexStart, CBlock
 
     CBlockIndex* pindex = pindexStart;
     CBlockIndex* ret = nullptr;
+
+    if (pindex) LogPrintf("Rescan started from block %d...\n", pindex->nHeight);
+
     {
         fAbortRescan = false;
         ShowProgress(_("Rescanning..."), 0); // show rescan progress in GUI as dialog or on splashscreen, if -rescan on startup