check if wallet is mixing and restart whirlpool client if necessary

src/main/java/com/sparrowwallet/sparrow/whirlpool/Whirlpool.java

@@ -310,6 +310,17 @@ public class Whirlpool {
         }
     }
 
+    public void checkIfMixing() {
+        if(whirlpoolWalletService.whirlpoolWallet() == null) {
+            return;
+        }
+
+        if(isMixing() && !whirlpoolWalletService.whirlpoolWallet().isStarted()) {
+            log.warn("Wallet is not started, but mixingProperty is true");
+            WhirlpoolEventService.getInstance().post(new WalletStopEvent(whirlpoolWalletService.whirlpoolWallet()));
+        }
+    }
+
     public boolean hasWallet() {
         return hdWallet != null;
     }

src/main/java/com/sparrowwallet/sparrow/whirlpool/WhirlpoolServices.java

@@ -182,6 +182,13 @@ public class WhirlpoolServices {
         stopAllWhirlpool();
     }
 
+    @Subscribe
+    public void newBlock(NewBlockEvent event) {
+        for(Whirlpool whirlpool : whirlpoolMap.values()) {
+            whirlpool.checkIfMixing();
+        }
+    }
+
     @Subscribe
     public void walletOpened(WalletOpenedEvent event) {
         String walletId = event.getStorage().getWalletId(event.getWallet());