[glom] Dialog_ImportCSV::get(): Correct the return type.

[Murray Cumming <murrayc src gnome org>]

commit 3a3b6cb8568277d9d03a9bdc9631cd50ce03f33a
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Feb 5 10:13:28 2016 +0100

    Dialog_ImportCSV::get(): Correct the return type.

 glom/import_csv/dialog_import_csv.cc          |    4 ++--
 glom/import_csv/dialog_import_csv.h           |    2 +-
 glom/import_csv/dialog_import_csv_progress.cc |    2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/glom/import_csv/dialog_import_csv.cc b/glom/import_csv/dialog_import_csv.cc
index 7505113..8509f8f 100644
--- a/glom/import_csv/dialog_import_csv.cc
+++ b/glom/import_csv/dialog_import_csv.cc
@@ -241,9 +241,9 @@ const Glib::ustring& Dialog_Import_CSV::get_data(guint row, guint col)
   return m_parser->get_data(row, col);
 }
 
-CsvParser& Dialog_Import_CSV::get_parser()
+std::shared_ptr<CsvParser> Dialog_Import_CSV::get_parser()
 {
-  return *(m_parser.get());
+  return m_parser;
 }
 
 void Dialog_Import_CSV::clear()
diff --git a/glom/import_csv/dialog_import_csv.h b/glom/import_csv/dialog_import_csv.h
index 786ee08..220acb7 100644
--- a/glom/import_csv/dialog_import_csv.h
+++ b/glom/import_csv/dialog_import_csv.h
@@ -63,7 +63,7 @@ public:
   const Glib::ustring& get_data(unsigned int row, unsigned int col);
 
   // TODO: perhaps it would be safer to just wrap the needed parser API here.
-  CsvParser& get_parser();
+  std::shared_ptr<CsvParser> get_parser();
 
   typedef sigc::signal<void> type_signal_state_changed;
 
diff --git a/glom/import_csv/dialog_import_csv_progress.cc b/glom/import_csv/dialog_import_csv_progress.cc
index 64d3c2c..c928eab 100644
--- a/glom/import_csv/dialog_import_csv_progress.cc
+++ b/glom/import_csv/dialog_import_csv_progress.cc
@@ -163,7 +163,7 @@ bool Dialog_Import_CSV_Progress::on_idle_import()
   while(gtk_events_pending())
     gtk_main_iteration_do(true);
 
-  const auto row = m_data_source->get_parser().fetch_next_row();
+  const auto row = m_data_source->get_parser()->fetch_next_row();
 
   //If there are no more rows to import, then stop, by returning false:
   // TODO: Perhaps abort on 0 == row instead, so that we do not stop import on