coccinelle: polish FREE_AND_NULL rules

diff --git a/split-index.c b/split-index.c
index 49bd197f715ae783d7fdbe8e1d638a1bcac0073c..20477c6a488bcf80e07aceb12c8b45cee5323818 100644 (file)
--- a/split-index.c
+++ b/split-index.c
@@ -174,10 +174,9 @@ void merge_base_index(struct index_state *istate)
 
        ewah_free(si->delete_bitmap);
        ewah_free(si->replace_bitmap);
-       free(si->saved_cache);
+       FREE_AND_NULL(si->saved_cache);
        si->delete_bitmap  = NULL;
        si->replace_bitmap = NULL;
-       si->saved_cache    = NULL;
        si->saved_cache_nr = 0;
 }