Don't transport more events as available in input (#2421)

In #2421 a crash was reported when the number of events requested to be transported is larger than the number of events in the input. Add protection against such a crash in the transport class. The number of events to be transported is set to the minimum number of events in any of the connected inputs.

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• 451396eb - 1 commit from branch computing:master
• 494dc495 - Don't transport more events as available in input

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Not nice that you have to explicitly code the generator type in the transport class. Can't we use the base class?

Unfortunately not. The base class is FairGenerator which does not have the needed function to extract the number of available events.

Meaning we would like to have a CbmGenerator base class. To come. For the time being, let's proceed in the way your propose.

I am not sure if this make sense for this problem. If you do that you have catch the cases when you have no limit at all like for example the box generator. It also means that we have to treat generators from FairRoot differently or need to re-implement them.

Dear @f.uhlig, @v.friese, @p.-a.loizeau,

you have been identified as code owner of at least one file which was changed with this merge request.

Please check the changes and approve them or request changes.

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• 8b959084 - Don't transport more events as available in input
• 865362c7 - Forgot to set the changes

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