Call correct time function

[joakim-hove]

Followup fix to: #642

A central element in #642 is to break down a time_t value to a full datetime (year, month, day, hour, minute, second) - where it was previously only broken down to (year,month,day). Unfortunately there was a bug in #642 which lead to the (hour, minute, second) part to be undefined.

[bska]

Does this return the seconds as seconds (0..59) or as microseconds (0..59,999,999)?

[joakim-hove]

Does this return the seconds as seconds (0..59) or as microseconds (0..59,999,999)?

seconds (0..59) - it is ultimately based on unix gmtime_r which has seconds resolution; and it goes in and out of the function as unix time_t.