AH_STAT_HIST
#define AH_NSTATS (AH_STAT_HIST + AH_ALG_MAX)
AH_STATINC(AH_STAT_HIST + ah_stats[sav->alg_auth]);
AH_STATINC(AH_STAT_HIST + ah_stats[sav->alg_auth]);
AH_STATINC(AH_STAT_HIST + ah_stats[sav->alg_auth]);
AH_STATINC(AH_STAT_HIST + ah_stats[sav->alg_auth]);
if (ahstats[AH_STAT_HIST + i])
ahstats[AH_STAT_HIST + i]);