MacOS - try with non-const key for map

gnucash/import-export/csv-imp/assistant-csv-trans-import.cpp

@@ -1425,7 +1425,7 @@ CsvImpTransAssist::preview_row_fill_state_cells (GtkListStore *store, GtkTreeIte
         fcolor = "black";
         bcolor = "pink";
         err_msg = std::string(_("This line has the following parse issues:"));
-        auto add_non_acct_err_bullet = [](std::string& a, ErrPair& b)->std::string
+        auto add_non_acct_err_bullet = [](std::string& a, ErrMap::value_type& b)->std::string
                                 {
                                     if ((b.first == GncTransPropType::ACCOUNT) ||
                                         (b.first == GncTransPropType::TACCOUNT))
@@ -2081,7 +2081,7 @@ CsvImpTransAssist::assist_match_page_prepare ()
          */
         auto err_msg = std::string(err.what());
         auto err_msgs = err.errors();
-        auto add_bullet_item = [](std::string& a, ErrPair& b)->std::string { return std::move(a) + "\n• " + b.second; };
+        auto add_bullet_item = [](std::string& a, ErrMap::value_type& b)->std::string { return std::move(a) + "\n• " + b.second; };
         err_msg = std::accumulate (err_msgs.begin(), err_msgs.end(), std::move (err_msg), add_bullet_item);
 
         gnc_error_dialog (GTK_WINDOW (csv_imp_asst),

gnucash/import-export/csv-imp/gnc-imp-props-tx.hpp

@@ -78,8 +78,8 @@ enum class GncTransPropType {
 };
 
 using StrVec = std::vector<std::string>;
-using ErrMap = std::map<const GncTransPropType, std::string>;
-using ErrPair = std::pair<const GncTransPropType, std::string>;
+using ErrMap = std::map<GncTransPropType, std::string>;
+using ErrPair = std::pair<GncTransPropType, std::string>;
 
 /** Maps all column types to a string representation.
  *  The actual definition is in gnc-csv-imp-trans.cpp.