When updating the statistics for RRset types, if a header is marked
stale or ancient, the appropriate statistic counters are decremented,
then incremented.
Also fix some out of date comments.
(cherry picked from commit a3af2c57e7)
When updating the statistics for RRset types, if a header is marked
stale or ancient, the appropriate statistic counters are decremented,
then incremented.
Also fix some out of date comments.
(cherry picked from commit a3af2c57e7)