Fixed that issues grouped by custom field is broken in PDF export (#12513).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@10956 e93f8b46-1217-0410-a6f0-8f06a7374b81

diff --git a/lib/redmine/export/pdf.rb b/lib/redmine/export/pdf.rb
index 0000ddebaddfb368bdc19f93a6b16c1b0ab8d287..3a246cfc2aa9d60636c462e9f2179ba3c47bce59 100644 (file)
--- a/lib/redmine/export/pdf.rb
+++ b/lib/redmine/export/pdf.rb
@@ -428,7 +428,7 @@ module Redmine
           if query.grouped? &&
                (group = query.group_by_column.value(issue)) != previous_group
             pdf.SetFontStyle('B',10)
-            group_label = group.blank? ? 'None' : group.to_s
+            group_label = group.blank? ? 'None' : group.to_s.dup
             group_label << " (#{query.issue_count_by_group[group]})"
             pdf.Bookmark group_label, 0, -1
             pdf.RDMCell(table_width + col_id_width, row_height * 2, group_label, 1, 1, 'L')