Fix test

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

@@ -1,8 +1,9 @@
 #![deny(temporary_cstring_as_ptr)]
 
 use std::ffi::CString;
+use std::os::raw::c_char;
 
-fn some_function(data: *const i8) {}
+fn some_function(data: *const c_char) {}
 
 fn main() {
     some_function(CString::new("").unwrap().as_ptr());

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

@@ -1,5 +1,5 @@
 error: getting the inner pointer of a temporary `CString`
-  --> $DIR/lint-temporary-cstring-as-param.rs:8:45
+  --> $DIR/lint-temporary-cstring-as-param.rs:9:45
    |
 LL |     some_function(CString::new("").unwrap().as_ptr());
    |                   ------------------------- ^^^^^^ this pointer will be invalid