ensure delegate isn't null and does'nt throw

[soma-kurisu]

just a little patch to stay on the safe side (c2bb83c#r138753050)

[soma-kurisu]

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[hishamco]

You target a draft PR

/cc @ns8482e

[ns8482e]

@hishamco Thanks!

@soma-kurisu Branch is super-not-ready and for educational/rnd/poc purpose only

[soma-kurisu]

@hishamco , @ns8482e : yes, already thought so.