Use to_rust_string in unlink

Author: lucic71

rules/unistd/tgt_refcount.rs

@@ -4,11 +4,7 @@
 use libcc2rs::*;
 
 fn f4(a0: Ptr<u8>) -> i32 {
-    match nix::unistd::unlink(
-        ::std::ffi::CString::new(a0.to_c_string_iterator().collect::<Vec<u8>>())
-            .unwrap()
-            .as_c_str(),
-    ) {
+    match nix::unistd::unlink(a0.to_rust_string().as_str()) {
         Ok(()) => 0,
         Err(__e) => {
             libcc2rs::cpp2rust_errno().write(__e as i32);

tests/unit/out/refcount/stdcopy_ostream.rs

@@ -29,15 +29,7 @@ fn main_0() -> i32 {
         );
         (*ofs.borrow_mut()).try_clone().unwrap()
     };
-    match nix::unistd::unlink(
-        ::std::ffi::CString::new(
-            (file.as_pointer() as Ptr<u8>)
-                .to_c_string_iterator()
-                .collect::<Vec<u8>>(),
-        )
-        .unwrap()
-        .as_c_str(),
-    ) {
+    match nix::unistd::unlink((file.as_pointer() as Ptr<u8>).to_rust_string().as_str()) {
         Ok(()) => 0,
         Err(__e) => {
             libcc2rs::cpp2rust_errno().write(__e as i32);