rem: memcpy(*dst, hf->body.s, hf->body.len);
add: memcpy(*dst, hf->body.s, hf->body.len-1);
context: int copy_hf( char **dst, struct hdr_field* hf, char *bumper ){   int n;   n=hf->body.len+2+hf->name.len+CRLF_LEN;   if (*dst+n >= bumper ) return -1;   memcpy(*dst, hf->name.s, hf->name.len );   *dst+= hf->name.len ;   **dst = ':'; (*dst)++;   **dst = ' '; (*dst)++;   memcpy(*dst, hf->body.s, hf->body.len);   *dst+= hf->body.len;   memcpy( *dst, CRLF, CRLF_LEN );   *dst+=CRLF_LEN;   return 0;}