Initialize the on_fragment callback pointer
Initialize the on_fragment callback pointer

http_parser_init() did not initialize the http_parser.on_fragment.

tml/http-parser,apaprocki/http-parser,nikicat/http-parser,OpenMusicKontrollers/chimaerad,OpenMusicKontrollers/chimaerad,OpenMusicKontrollers/chimaerad,TooTallNate/http-parser,humbletim/http-parser,ignacio/http-parser,mopemope/http-parser,OpenMusicKontrollers/chimaerad,arsane/http-parser,tjweir/http-parser,tmm1/http-parser,OpenMusicKontrollers/chimaerad,thomaslee/http-parser,OpenMusicKontrollers/chimaerad