Make delete_last_instruction() use the new undo_ptr_list_last() fn

Not only are we always going to replace the last instruction with
something else, we can't afford to free the ptrlist, because the caller
is usually walking over it in a loop.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib.h b/lib.h
index 324a8a0..852f3af 100644
--- a/lib.h
+++ b/lib.h
@@ -122,7 +122,7 @@ static inline void free_instruction_list(struct instruction_list **head)
 
 static inline struct instruction * delete_last_instruction(struct instruction_list **head)
 {
-	return delete_ptr_list_last((struct ptr_list **)head);
+	return undo_ptr_list_last((struct ptr_list **)head);
 }
 
 static inline struct basic_block * delete_last_basic_block(struct basic_block_list **head)