attempt wallet fix for empty vin issue

src/wallet/wallet.cpp

@@ -1211,6 +1211,8 @@ bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pbl
         AssertLockHeld(cs_wallet);
         if ( tx.IsCoinBase() && tx.vout[0].nValue == 0 )
             return false;
+        if ( tx.vin.empty() )
+            return false;
         bool fExisted = mapWallet.count(tx.GetHash()) != 0;
         if (fExisted && !fUpdate) return false;
         auto noteData = FindMyNotes(tx);