Change to warn by default / fix typo

src/test/ui/lint/lint-temporary-cstring-as-ptr.rs

@@ -1,4 +1,5 @@
 // ignore-tidy-linelength
+#![deny(temporary_cstring_as_ptr)]
 
 use std::ffi::CString;
 

src/test/ui/lint/lint-temporary-cstring-as-ptr.stderr

@@ -1,12 +1,16 @@
 error: getting the inner pointer of a temporary `CString`
-  --> $DIR/lint-temporary-cstring-as-ptr.rs:6:48
+  --> $DIR/lint-temporary-cstring-as-ptr.rs:7:48
    |
 LL |     let s = CString::new("some text").unwrap().as_ptr();
    |             ---------------------------------- ^^^^^^ this pointer will be invalid
    |             |
    |             this `CString` is deallocated at the end of the expression, bind it to a variable to extend its lifetime
    |
-   = note: `#[deny(temporary_cstring_as_ptr)]` on by default
+note: the lint level is defined here
+  --> $DIR/lint-temporary-cstring-as-ptr.rs:2:9
+   |
+LL | #![deny(temporary_cstring_as_ptr)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^
    = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` is deallocated because nothing is referencing it as far as the type system is concerned
 
 error: aborting due to previous error