Fix maybe-uninitialized warning in IsSpentKey

src/wallet/wallet.cpp

@@ -1039,9 +1039,7 @@ bool CWallet::IsSpentKey(const CScript& scriptPubKey) const
         return true;
     }
 
-    LegacyScriptPubKeyMan* spk_man = GetLegacyScriptPubKeyMan();
+    if (LegacyScriptPubKeyMan* spk_man = GetLegacyScriptPubKeyMan()) {
-    if (!spk_man) return false;
-
         for (const auto& keyid : GetAffectedKeys(scriptPubKey, *spk_man)) {
             WitnessV0KeyHash wpkh_dest(keyid);
             if (IsAddressPreviouslySpent(wpkh_dest)) {
@@ -1056,6 +1054,7 @@ bool CWallet::IsSpentKey(const CScript& scriptPubKey) const
                 return true;
             }
         }
+    }
     return false;
 }