Fix nll test

JohnTitor · JohnTitor · commit 614abe48b0b9 · 2019-11-16T01:40:59.000+09:00
diff --git a/src/test/ui/unboxed-closures/issue-30906.nll.stderr b/src/test/ui/unboxed-closures/issue-30906.nll.stderr
@@ -0,0 +1,8 @@
+error: higher-ranked subtype error
+  --> $DIR/issue-30906.rs:15:5
+   |
+LL |     test(Compose(f, |_| {}));
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
