docs: remove stale reference to check_let_chain

cyan-river · cyan-river · commit 50d4943d449f · 2026-03-15T13:09:41.000+08:00
The function `check_let_chain` was removed previously, but it was still
referenced in a comment in `check_match.rs`. This commit cleans it up.
diff --git a/compiler/rustc_mir_build/src/thir/pattern/check_match.rs b/compiler/rustc_mir_build/src/thir/pattern/check_match.rs
@@ -101,8 +101,7 @@ struct MatchVisitor<'p, 'tcx> {
     error: Result<(), ErrorGuaranteed>,
 }
 
-// Visitor for a thir body. This calls `check_match`, `check_let` and `check_let_chain` as
-// appropriate.
+// Visitor for a thir body. This calls `check_match` and `check_let` as appropriate.
 impl<'p, 'tcx> Visitor<'p, 'tcx> for MatchVisitor<'p, 'tcx> {
     fn thir(&self) -> &'p Thir<'tcx> {
         self.thir

Original file line number	Diff line number	Diff line change
`@@ -101,8 +101,7 @@ struct MatchVisitor<'p, 'tcx> {`
`101`	`101`	`error: Result<(), ErrorGuaranteed>,`
`102`	`102`	`}`
`103`	`103`
`104`		-// Visitor for a thir body. This calls `check_match`, `check_let` and `check_let_chain` as
`105`		`-// appropriate.`
	`104`	+// Visitor for a thir body. This calls `check_match` and `check_let` as appropriate.
`106`	`105`	`impl<'p, 'tcx> Visitor<'p, 'tcx> for MatchVisitor<'p, 'tcx> {`
`107`	`106`	`fn thir(&self) -> &'p Thir<'tcx> {`
`108`	`107`	`self.thir`