BUG/MINOR: event_hdl: don't waste 1 event subtype slot

ESUB_INDEX(n) index macro is used exclusively with n > 0
Fixing it so that it starts numbering at 1 instead of 2.

This way, we don't waste a subtype slot in event_hdl_sub_type
struct, and we comply with the structure comments about max
supported event subtypes (currently set at 16).

If 68e692da0 ("MINOR: event_hdl: add event handler base api")
is being backported, then this commit should be backported with it.
1 file changed