Clone path in refcount conversion rule

Author: lucic71

rules/fs_path/tgt_refcount.rs

@@ -15,5 +15,5 @@ fn f1(a0: Ptr<i8>) -> Vec<i8> {
 }
 
 fn f2(a0: Vec<i8>) -> Vec<i8> {
-    a0
+    a0.clone()
 }