Fix code to work on newer Moose

Test are failling on Fedora 19 : 
```perl
t/10-traits.t ...... 1/5 
#   Failed test 'htmlElement trait construction is good!!'
#   at t/10-traits.t line 19.

#   Failed test 'Success with use! (failed without the parent form)'
#   at t/10-traits.t line 25.
#                   'Can't locate object method "meta" via package "HTML::Element" at /home/misc/checkout/git/perl-html-treebuilderx-asp_net/blib/lib/HTML/TreeBuilderX/ASP_NET/Roles/htmlElement.pm line 19.
# '
#     doesn't match '(?^:<form>)'
Can't locate object method "meta" via package "HTML::Element" at /home/misc/checkout/git/perl-html-treebuilderx-asp_net/blib/lib/HTML/TreeBuilderX/ASP_NET/Roles/htmlElement.pm line 19.
```

This fix the issue, by making it working again. It was only tested on Fedora 19 with Moose 2.0801