Ignore an error, if the report section list is empty

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@9002 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Form/ListBox.py

@@ -1594,6 +1594,8 @@ class ListBoxRenderer:
     # Make a list of lines.
     line_class = self.getLineClass()
     line_list = []
+
+    try:
       section_index = 0
       current_section_base_index = 0
       current_section = report_section_list[0]
@@ -1620,6 +1622,9 @@ class ListBoxRenderer:
                           domain_selection = current_section.domain_selection,
                           depth = current_section.depth)
         line_list.append(line)
+    except IndexError:
+      # If the report section list is empty, nothing to do.
+      pass
 
     return line_list