[wallet] Add FlushWallets() function to wallet/init.cpp

src/init.cpp

@@ -189,9 +189,7 @@ void Shutdown()
     StopRPC();
     StopHTTPServer();
 #ifdef ENABLE_WALLET
-    for (CWalletRef pwallet : vpwallets) {
-        pwallet->Flush(false);
-    }
+    FlushWallets(false);
 #endif
     MapPort(false);
     UnregisterValidationInterface(peerLogic.get());
@@ -246,9 +244,7 @@ void Shutdown()
         pblocktree = nullptr;
     }
 #ifdef ENABLE_WALLET
-    for (CWalletRef pwallet : vpwallets) {
-        pwallet->Flush(true);
-    }
+    FlushWallets(true);
 #endif
 
 #if ENABLE_ZMQ

src/wallet/init.cpp

@@ -245,3 +245,9 @@ bool OpenWallets()
 
     return true;
 }
+
+void FlushWallets(bool shutdown) {
+    for (CWalletRef pwallet : vpwallets) {
+        pwallet->Flush(shutdown);
+    }
+}

src/wallet/init.h

@@ -22,4 +22,7 @@ bool VerifyWallets();
 //! Load wallet databases.
 bool OpenWallets();
 
+//! Flush all wallets in preparation for shutdown.
+//! Call with shutdown = true to actually shutdown the wallet.
+void FlushWallets(bool shutdown);
 #endif // BITCOIN_WALLET_INIT_H