BUG/MINOR: tcpcheck: Fix numbering of implicit HTTP send/expect rules

The index of the failing rule is reported in the health-check log message. The
rules index is also used in the check traces. But for implicit HTTP send/expect
rules, the index is wrong. It must be incremented by one compared to the
preceding rule.

This patch may be backported as far as 2.2.
1 file changed