eqsim_run error if Fbar=0 in one year

[vtrijoulet]

It must rarely happen but if catch is null in one of the years (hence Fbar, e.g. due to 0 catch advice or in simulations with HCR where SSB is below Blim), the calculation of selectivity l.205 as follows:
sel <- sweep(sel, 2, Fbar, "/")
will return a NaN, than induces errors later in the code that makes the function stops.
A simple fix would be to add l.206:
sel[!is.finite(sel)] <- 0
Maybe not ideal but will solve the problem.

Cheers,

Vanessa