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

src/init.cpp

@@ -265,10 +265,7 @@ void Shutdown()
     UnregisterAllValidationInterfaces();
     GetMainSignals().UnregisterBackgroundSignalScheduler();
 #ifdef ENABLE_WALLET
-    for (CWalletRef pwallet : vpwallets) {
-        delete pwallet;
-    }
-    vpwallets.clear();
+    CloseWallets();
 #endif
     globalVerifyHandle.reset();
     ECC_Stop();