Allow duplicate receivers in z_sendmany

src/wallet/rpcwallet.cpp

@@ -4353,8 +4353,9 @@ UniValue z_sendmany(const UniValue& params, bool fHelp)
         //else if ( ASSETCHAINS_PRIVATE != 0 && komodo_isnotaryvout((char *)address.c_str()) == 0 )
         //    throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "cant use transparent addresses in private chain");
 
-        if (setAddress.count(address))
-            throw JSONRPCError(RPC_INVALID_PARAMETER, string("Invalid parameter, duplicated address: ")+address);
+        // Allowing duplicate receivers helps various HushList protocol operations
+        //if (setAddress.count(address))
+        //    throw JSONRPCError(RPC_INVALID_PARAMETER, string("Invalid parameter, duplicated address: ")+address);
         setAddress.insert(address);
 
         UniValue memoValue = find_value(o, "memo");