simplify AutoDeleter code by using typedef

Change-Id: I726c3aee794b91ed51970853db3921d17a5f795e
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3462
Reviewed-by: Adrien Destugues <[email protected]>

src/add-ons/kernel/file_systems/bindfs/Utils.h

@@ -11,24 +11,7 @@
 #include <vfs.h>
 
 
-using BPrivate::AutoDeleter;
-
-
-struct VnodePut
-{
-	inline void operator()(vnode* _vnode)
-	{
-		if (_vnode != NULL)
-			vfs_put_vnode(_vnode);
-	}
-};
-
-struct VnodePutter : AutoDeleter<vnode, VnodePut>
-{
-	VnodePutter() : AutoDeleter<vnode, VnodePut>() {}
-
-	VnodePutter(vnode* _vnode) : AutoDeleter<vnode, VnodePut>(_vnode) {}
-};
+typedef CObjectDeleter<vnode, void, vfs_put_vnode> VnodePutter;
 
 
 #endif	// UTILS_H

src/system/boot/loader/file_systems/tarfs/tarfs.cpp

@@ -52,19 +52,7 @@ struct RegionDelete {
 	}
 };
 
-struct RegionDeleter : BPrivate::AutoDeleter<void, RegionDelete> {
-	RegionDeleter()
-		:
-		BPrivate::AutoDeleter<void, RegionDelete>()
-	{
-	}
-
-	RegionDeleter(void* memory)
-		:
-		BPrivate::AutoDeleter<void, RegionDelete>(memory)
-	{
-	}
-};
+typedef BPrivate::AutoDeleter<void, RegionDelete> RegionDeleter;
 
 class Directory;