Remove temporary string variable from _Wikitext_hyperlink
Remove temporary string variable from _Wikitext_hyperlink

Now that _Wikitext_hyperlink returns void there is no longer any
need to use a temporary String instance. Instead, we append
directly to the parser->output buffer, thus saving an allocation.

Signed-off-by: Wincent Colaiuta <c76ac2e9cd86441713c7dfae92c451f3e6d17fdc@wincent.com>

geni/wikitext,wincent/wikitext,geni/wikitext,barnaclebarnes/wikitext,geni/wikitext,barnaclebarnes/wikitext,wincent/wikitext,barnaclebarnes/wikitext