graph: use SWAP macro

diff --git a/graph.c b/graph.c
index 4c722303d2d2218d26d729520cd179cb9f748674..29b0f51dc507caa91fe6a748ad9599b97b47e242 100644 (file)
--- a/graph.c
+++ b/graph.c
@@ -463,7 +463,6 @@ static void graph_update_width(struct git_graph *graph,
 static void graph_update_columns(struct git_graph *graph)
 {
        struct commit_list *parent;
-       struct column *tmp_columns;
        int max_new_columns;
        int mapping_idx;
        int i, seen_this, is_commit_in_columns;
@@ -476,11 +475,8 @@ static void graph_update_columns(struct git_graph *graph)
         * We'll re-use the old columns array as storage to compute the new
         * columns list for the commit after this one.
         */
-       tmp_columns = graph->columns;
-       graph->columns = graph->new_columns;
+       SWAP(graph->columns, graph->new_columns);
        graph->num_columns = graph->num_new_columns;
-
-       graph->new_columns = tmp_columns;
        graph->num_new_columns = 0;
 
        /*