Crash when meta.xml is invalid

[LocoDelAssembly]

This line causes a NoMethodError (undefined method ``name' for nil:NilClass) when xml is invalid/empty.

dwc-archive/lib/dwc_archive/xml_reader.rb

Line 11 in 5e41ff3

{ result.root.name.to_sym => self::Node.new(result.root).value }

Sample file

[dimus]

@LocoDelAssembly can you send a PR for this?