fix test

Author: lcnr

src/test/ui/const_evaluatable/function-call.rs

@@ -1,4 +1,5 @@
 // check-pass
+#![warn(const_evaluatable_unchecked)]
 
 const fn foo<T>() -> usize {
     if std::mem::size_of::<*mut T>() < 8 { // size of *mut T does not depend on T

src/test/ui/const_evaluatable/function-call.stderr

@@ -1,10 +1,14 @@
 warning: cannot use constants which depend on generic parameters in types
-  --> $DIR/function-call.rs:12:17
+  --> $DIR/function-call.rs:13:17
    |
 LL |     let _ = [0; foo::<T>()];
    |                 ^^^^^^^^^^
    |
-   = note: `#[warn(const_evaluatable_unchecked)]` on by default
+note: the lint level is defined here
+  --> $DIR/function-call.rs:2:9
+   |
+LL | #![warn(const_evaluatable_unchecked)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    = note: for more information, see issue #76200 <https://github.com/rust-lang/rust/issues/76200>