Move #[allow(unreachable_code)] in tests/run-pass/generator.rs

rust-version

@@ -1 +1 @@
-f66e825f73d2bd7f8a763b723983850f891985b0
+c4be230b4a30eb74e3a3908455731ebc2f731d3d

tests/run-pass/generator.rs

@@ -93,8 +93,8 @@ fn basic() {
         if b { return; }
         #[allow(unused)]
         let x = never();
-        yield 2;
         #[allow(unreachable_code)]
+        yield 2;
         drop(x);
     });