To avert offending, writers have strived not to use “he,” “him” or “his” as a pronoun for a generic person that could be either male or female. The problem of the genderless pronoun is addresses humorously and practically in this post at Set in Style by Mister Thorne. He notes the alternative of using “it,” notes the use of the plural “they” and “their” to refer to a singular person, and rejects both practices in favor of some common sense editing.