remove parameters that are only used in recursion

Author: buttercrab

clippy_lints/src/question_mark.rs

@@ -123,7 +123,7 @@ impl QuestionMark {
     }
 
     fn result_check_and_early_return(cx: &LateContext<'_>, expr: &Expr<'_>, nested_expr: &Expr<'_>) -> bool {
-        Self::is_result(cx, expr) && Self::expression_returns_unmodified_err(cx, nested_expr, expr)
+        Self::is_result(cx, expr) && Self::expression_returns_unmodified_err(nested_expr, expr)
     }
 
     fn option_check_and_early_return(cx: &LateContext<'_>, expr: &Expr<'_>, nested_expr: &Expr<'_>) -> bool {
@@ -156,9 +156,9 @@ impl QuestionMark {
         }
     }
 
-    fn expression_returns_unmodified_err(cx: &LateContext<'_>, expr: &Expr<'_>, cond_expr: &Expr<'_>) -> bool {
+    fn expression_returns_unmodified_err(expr: &Expr<'_>, cond_expr: &Expr<'_>) -> bool {
         match peel_blocks_with_stmt(expr).kind {
-            ExprKind::Ret(Some(ret_expr)) => Self::expression_returns_unmodified_err(cx, ret_expr, cond_expr),
+            ExprKind::Ret(Some(ret_expr)) => Self::expression_returns_unmodified_err(ret_expr, cond_expr),
             ExprKind::Path(_) => path_to_local(expr).is_some() && path_to_local(expr) == path_to_local(cond_expr),
             _ => false,
         }