From 7a5ede677b7642f098fd5fd69272c742d13e4ea4 Mon Sep 17 00:00:00 2001
From: Dale Wijnand <dale.wijnand@gmail.com>
Date: Mon, 6 Aug 2018 15:42:08 +0200
Subject: [PATCH] Use Option::map_or

---
 clippy_lints/src/mem_forget.rs | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/clippy_lints/src/mem_forget.rs b/clippy_lints/src/mem_forget.rs
index 88c24458646..80130de15d7 100644
--- a/clippy_lints/src/mem_forget.rs
+++ b/clippy_lints/src/mem_forget.rs
@@ -37,10 +37,7 @@ fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, e: &'tcx Expr) {
                     if match_def_path(cx.tcx, def_id, &paths::MEM_FORGET) {
                         let forgot_ty = cx.tables.expr_ty(&args[0]);
 
-                        if match forgot_ty.ty_adt_def() {
-                            Some(def) => def.has_dtor(cx.tcx),
-                            _ => false,
-                        } {
+                        if forgot_ty.ty_adt_def().map_or(false, |def| def.has_dtor(cx.tcx)) {
                             span_lint(cx, MEM_FORGET, e.span, "usage of mem::forget on Drop type");
                         }
                     }