Auto merge of #15625 - jDomantas:domantas/fix-15623, r=HKalbasi

fix: Don't skip closure captures after let-else

As I understand that `return` was left there by accident. It caused capture analysis to skip the rest of the block after a let-else, and then missed captures caused incorrect results in borrowck, closure hints, layout calculation, etc.

Fixes #15623

I didn't understand why I using the example from #15623 as-is doesn't work - I don't get the warnings unless I remove the `call_me()` call, even on the same commit as my own RA version which does show those warnings.
tree: 31b12431ea791129fc4331a588f91358bcfccfad
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