Enable never type in empty enum ui test; run cargo dev bless

Author: nahuakang

tests/ui/empty_enum.rs

@@ -1,6 +1,7 @@
 #![allow(dead_code)]
 #![warn(clippy::empty_enum)]
-
+// Enable never type to test empty enum lint
+#![feature(never_type)]
 enum Empty {}
 
 fn main() {}

tests/ui/empty_enum.stderr

@@ -1,5 +1,5 @@
 error: enum with no variants
-  --> $DIR/empty_enum.rs:4:1
+  --> $DIR/empty_enum.rs:5:1
    |
 LL | enum Empty {}
    | ^^^^^^^^^^^^^