remove unused `mut`s

1 files changed, 1 insertions, 1 deletions

diff --git a/compiler/rustc_hir_analysis/src/check/region.rs b/compiler/rustc_hir_analysis/src/check/region.rs
index 421b3df2d53..6ab5556e951 100644
--- a/compiler/rustc_hir_analysis/src/check/region.rs
+++ b/compiler/rustc_hir_analysis/src/check/region.rs
@@ -421,7 +421,7 @@ fn resolve_expr<'tcx>(visitor: &mut RegionResolutionVisitor<'tcx>, expr: &'tcx h
             let target_scopes = visitor.fixup_scopes.drain(start_point..);
 
             for scope in target_scopes {
-                let mut yield_data =
+                let yield_data =
                     visitor.scope_tree.yield_in_scope.get_mut(&scope).unwrap().last_mut().unwrap();
                 let count = yield_data.expr_and_pat_count;
                 let span = yield_data.span;