restore: Remove incorrect invocation of free() in restored_get_value

The free would cause a use-after-free when the plist is later freed, which
eventually ends up in a crash.

Thanks @TrungNguyen1909 for catching this.

src/restore.c

diff --git a/src/restore.c b/src/restore.c
index 591fd16..41bfb9d 100644
--- a/src/restore.c
+++ b/src/restore.c
@@ -287,7 +287,7 @@
 	}
 
 	*value = plist_copy(item);
-	free(item);
+
 	return RESTORE_E_SUCCESS;
 }