coccinelle: make use of the "type" FREE_AND_NULL() rule

diff --git a/tree-diff.c b/tree-diff.c
index e164e532b2f76617d822c3bef9492b9525b56e83..1e1b393d083935555058aed475ab804a839738c0 100644 (file)
--- a/tree-diff.c
+++ b/tree-diff.c
@@ -140,8 +140,7 @@ static struct combine_diff_path *path_appendnew(struct combine_diff_path *last,
        /* if last->next is !NULL - it is a pre-allocated memory, we can reuse */
        p = last->next;
        if (p && (alloclen > (intptr_t)p->next)) {
-               free(p);
-               p = NULL;
+               FREE_AND_NULL(p);
        }
 
        if (!p) {
@@ -559,8 +558,7 @@ struct combine_diff_path *diff_tree_paths(
         * (see path_appendnew() for details about why)
         */
        if (p->next) {
-               free(p->next);
-               p->next = NULL;
+               FREE_AND_NULL(p->next);
        }
 
        return p;