Fix closure recovery for missing block when return type is specified #138749
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Firstly, fix the
is_array_like_blockcondition to make sure we're actually recovering a mistyped block rather than some other delimited expression. This fixes #138748.Secondly, split out the recovery of missing braces on a closure body into a separate recovery. Right now, the suggestion
"you might have meant to write this as part of a block"originates fromsuggest_fixes_misparsed_for_loop_head, which feels kinda brittle and coincidental since AFAICT that recovery wasn't ever really intended to fix this.We also can make this
MachineApplicablein this case.Fixes #138748
r? @fmease or reassign if you're busy/don't wanna review this