char *fa, *fb;
const char *fa, *fb;
int compare_from (const void *a, const void *b){  HEADER **ppa = (HEADER **) a;  HEADER **ppb = (HEADER **) b;  char *fa, *fb;  int result;  fa = mutt_get_name ((*ppa)->env->from);  fb = mutt_get_name ((*ppb)->env->from);  result = mutt_strcasecmp (fa, fb);  AUXSORT(result,a,b);  return (SORTCODE (result));}