Merge #13351: wallet: Prevent segfault when sending to unspendable witness

fa36aa7965 wallet: Prevent segfault when sending to unspendable witness (MarcoFalke)

Pull request description:

  Previously we wouldn't care about the `txnouttype`, but after 4e91820531 we `switch` on the type.

Tree-SHA512: 6b597aba80cb43881671ad7b3a4ad97753864e8005a05c23fdd8ee79953483c08f241b5c392a9b494298eadc5cfba895b0480d916ef4f11d122fd6196f31b84a

src/script/standard.cpp

@@ -114,6 +114,7 @@ bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, std::vector<std::v
             vSolutionsRet.push_back(std::move(witnessprogram));
             return true;
         }
+        typeRet = TX_NONSTANDARD;
         return false;
     }