Avoid decoding from metadata if not necessary

Author: Urgau

compiler/rustc_lint/src/dangling.rs

@@ -130,9 +130,9 @@ impl DanglingPointerSearcher<'_, '_> {
 
 fn lint_expr(cx: &LateContext<'_>, expr: &Expr<'_>) {
     if let ExprKind::MethodCall(method, receiver, _args, _span) = expr.kind
+        && is_temporary_rvalue(receiver)
         && let Some(fn_id) = cx.typeck_results().type_dependent_def_id(expr.hir_id)
         && cx.tcx.has_attr(fn_id, sym::rustc_as_ptr)
-        && is_temporary_rvalue(receiver)
         && let ty = cx.typeck_results().expr_ty(receiver)
         && owns_allocation(cx.tcx, ty)
     {