src: move DeleteFnPtr into util.h

This is more generally useful than just in a crypto context.

PR-URL: https://github.com/nodejs/node/pull/20885
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

1 files changed, 0 insertions, 9 deletions

diff --git a/src/node_crypto.h b/src/node_crypto.h
index ee933ede1f..06b76b42ff 100644
--- a/src/node_crypto.h
+++ b/src/node_crypto.h
@@ -75,15 +75,6 @@ struct MarkPopErrorOnReturn {
   ~MarkPopErrorOnReturn() { ERR_pop_to_mark(); }
 };
 
-template <typename T, void (*function)(T*)>
-struct FunctionDeleter {
-  void operator()(T* pointer) const { function(pointer); }
-  typedef std::unique_ptr<T, FunctionDeleter> Pointer;
-};
-
-template <typename T, void (*function)(T*)>
-using DeleteFnPtr = typename FunctionDeleter<T, function>::Pointer;
-
 // Define smart pointers for the most commonly used OpenSSL types:
 using X509Pointer = DeleteFnPtr<X509, X509_free>;
 using BIOPointer = DeleteFnPtr<BIO, BIO_free_all>;