Merge branch 'nd/sha1-file-delta-stack-leakage-fix'

Fix a small leak in the delta stack used when resolving a long
delta chain at runtime.

* nd/sha1-file-delta-stack-leakage-fix:
  sha1_file: fix delta_stack memory leak in unpack_entry

sha1_file.c

@@ -2288,6 +2288,10 @@ void *unpack_entry(struct packed_git *p, off_t obj_offset,
 	*final_size = size;
 
 	unuse_pack(&w_curs);
+
+	if (delta_stack != small_delta_stack)
+		free(delta_stack);
+
 	return data;
 }