File fix_bsc_959129_mail_2.5.4.patch of Package rubygem-mail-2_5

diff --git a/lib/mail/field.rb b/lib/mail/field.rb
index 7853dc9..d808e57 100644
--- a/lib/mail/field.rb
+++ b/field.vulnerable.rb
@@ -187,7 +187,12 @@ module Mail
       STDERR.puts "WARNING: Could not parse (and so ignoring) '#{raw_field}'"
     end
 
+    def unfold(string)
+      string.gsub(/[\r\n \t]+/m, ' ')
+    end
+
     def create_field(name, value, charset)
+      value = unfold(value) if value.is_a?(String)
       begin
         self.field = new_field(name, value, charset)
       rescue Mail::Field::ParseError => e