Fix export to CSV from D-STAR radios

We need to support receiving DVMemory into the exporting CSV radio.
This isn't complete support, but makes us use a subclass of CSVRadio
with IcomDstarSupport so that import_logic will agree to import the
memories.

Fixes: #10724

chirp/drivers/generic_csv.py

@@ -314,6 +314,13 @@ def match_model(cls, filedata, filename):
             (filedata.startswith("Location,") or filedata == "")
 
 
+# This is not enough to actually behave like a D-STAR radio because we need
+# to use this class when opening files. However, it's enough for export to
+# CSV
+class DSTARCSVRadio(CSVRadio, chirp_common.IcomDstarSupport):
+    pass
+
+
 @directory.register
 class CommanderCSVRadio(CSVRadio):
     """A driver for reading CSV files generated by KG-UV Commander software"""

chirp/wxui/memedit.py

@@ -2014,7 +2014,10 @@ def export_to_file(self, filename):
         selected = self._grid.GetSelectedRows()
         if len(selected) <= 1:
             selected = range(0, self._grid.GetNumberRows())
-        r = generic_csv.CSVRadio(None)
+        if isinstance(self.radio, chirp_common.IcomDstarSupport):
+            r = generic_csv.DSTARCSVRadio(None)
+        else:
+            r = generic_csv.CSVRadio(None)
         # The CSV driver defaults to a single non-empty memory at location
         # zero, so delete it before we go to export.
         r.erase_memory(0)