Fix implicit declaration of conf_new_patternfile

[ryandesign]

Fixes:

conf.y:86:7: error: implicit declaration of function 'conf_new_patternfile' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
    { conf_new_patternfile(conf); CURPATTERNFILE = (yyvsp[(3) - (3)].str); ;}
      ^