bless stability-attribute-sanity ui test

sasurau4 · sasurau4 · commit ea5aff4565fc · 2020-12-02T00:18:36.000+09:00
diff --git a/src/test/ui/stability-attribute/stability-attribute-sanity.stderr b/src/test/ui/stability-attribute/stability-attribute-sanity.stderr
@@ -110,5 +110,5 @@ LL | #[rustc_deprecated(since = "a", reason = "text")]
 
 error: aborting due to 18 previous errors
 
-Some errors have detailed explanations: E0539, E0541, E0550.
+Some errors have detailed explanations: E0539, E0541, E0546, E0550.
 For more information about an error, try `rustc --explain E0539`.
