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Rollup merge of #102820 - ehuss:let-else-nightly-suggestion, r=petrochenkov

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Show let-else suggestion on stable.

The E0005 error message has a suggestion to use let-else. Now that let-else is stabilized, I think this message should be included on non-nightly toolchains. I suspect this was just an oversight from #93628.  [`E0005.stderr`](be1c7aad72/src/test/ui/error-codes/E0005.stderr (L22-L25)) contains an example of what this suggestion looks like.
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Yuki Okushi 2022-10-10 00:09:41 +09:00 committed by GitHub
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compiler/rustc_mir_build/src/thir/pattern/check_match.rs
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@ -491,7 +491,7 @@ impl<'p, 'tcx> MatchVisitor<'_, 'p, 'tcx> {
], ],
Applicability::HasPlaceholders, Applicability::HasPlaceholders,
); );
if !bindings.is_empty() && cx.tcx.sess.is_nightly_build() { if !bindings.is_empty() {
err.span_suggestion_verbose( err.span_suggestion_verbose(
semi_span.shrink_to_lo(), semi_span.shrink_to_lo(),
&format!( &format!(