Rename variable name in question_mark

Author: dswij

clippy_lints/src/question_mark.rs

@@ -172,17 +172,17 @@ impl QuestionMark {
         }
     }
 
-    fn expression_returns_unmodified_err(cx: &LateContext<'_>, expression: &Expr<'_>, cond_expr: &Expr<'_>) -> bool {
-        match expression.kind {
+    fn expression_returns_unmodified_err(cx: &LateContext<'_>, expr: &Expr<'_>, cond_expr: &Expr<'_>) -> bool {
+        match expr.kind {
             ExprKind::Block(block, _) => {
                 if let Some(return_expression) = Self::return_expression(block) {
                     return Self::expression_returns_unmodified_err(cx, return_expression, cond_expr);
                 }
 
                 false
             },
-            ExprKind::Ret(Some(expr)) => Self::expression_returns_unmodified_err(cx, expr, cond_expr),
-            ExprKind::Path(_) => path_to_local(expression) == path_to_local(cond_expr),
+            ExprKind::Ret(Some(ret_expr)) => Self::expression_returns_unmodified_err(cx, ret_expr, cond_expr),
+            ExprKind::Path(_) => path_to_local(expr) == path_to_local(cond_expr),
             _ => false,
         }
     }