builtin/log.c: Fix an "Using plain integer as NULL pointer" warning

diff --git a/tree-walk.h b/tree-walk.h
index 7e3e0b5ad16710c06464726ac04d2b1c48af3708..39524b7dba6a1d0b63c4cd2b42db59a27a030b21 100644 (file)
--- a/tree-walk.h
+++ b/tree-walk.h
@@ -60,4 +60,6 @@ static inline int traverse_path_len(const struct traverse_info *info, const stru
        return info->pathlen + tree_entry_len(n->path, n->sha1);
 }
 
+extern int tree_entry_interesting(const struct name_entry *, struct strbuf *, int, const struct pathspec *ps);
+
 #endif