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H A Dturb_spanstats.c6852f6f6cfb647134a2f70cbd6cc571acbeea4cb Sat Jan 27 17:06:59 UTC 2024 James Wright <james@jameswright.xyz> fluids: Stats don't overwrite solution on first-step failure

- When you have an initial condition from a previous problem, it might
fail on the first step. This will cause `reason != TS_CONVERGED_ITERATING`
and thus it will continue on with the rest of the TSMonitor routine.
If you have a stats file from that initial condition, it will be
overwritten.

Regardless of the overwriting behavior, it *never* makes sense to
write out a stats file on the first step; Using left-rectangle rule
for the time averaging integration, the initial step should *never* be
used, thus there is nothing to collect or write.