Use UInt32 for reinited domain
Use UInt32 for reinited domain

Because grn_obj_reinit_for() is for grn_obj_get_value(). It should set
the same type as grn_obj_get_value(). (grn_obj_get_value() sets domain,
so we don't need to set correct the valid domain before calling
grn_obj_get_value().)

redfigure/groonga,redfigure/groonga,kenhys/groonga,redfigure/groonga,hiroyuki-sato/groonga,cosmo0920/groonga,komainu8/groonga,naoa/groonga,cosmo0920/groonga,hiroyuki-sato/groonga,naoa/groonga,groonga/groonga,komainu8/groonga,groonga/groonga,groonga/groonga,kenhys/groonga,redfigure/groonga,kenhys/groonga,komainu8/groonga,hiroyuki-sato/groonga,hiroyuki-sato/groonga,groonga/groonga,kenhys/groonga,groonga/groonga,redfigure/groonga,cosmo0920/groonga,cosmo0920/groonga,groonga/groonga,cosmo0920/groonga,komainu8/groonga,groonga/groonga,naoa/groonga,hiroyuki-sato/groonga,kenhys/groonga,cosmo0920/groonga,groonga/groonga,hiroyuki-sato/groonga,naoa/groonga,redfigure/groonga,kenhys/groonga,komainu8/groonga,naoa/groonga,redfigure/groonga,naoa/groonga,hiroyuki-sato/groonga,kenhys/groonga,komainu8/groonga,redfigure/groonga,naoa/groonga,komainu8/groonga,hiroyuki-sato/groonga,naoa/groonga,cosmo0920/groonga,cosmo0920/groonga,komainu8/groonga,kenhys/groonga