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

A follow-up to the existing "expression" rule added in an earlier change. This manually excludes a few occurrences, mostly things that resulted in many FREE_AND_NULL() on one line, that'll be manually fixed in a subsequent change. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Ævar Arnfjörð Bjarmason committed Jun 15, 2017 at 23:15 UTC e140f7afddcdce2bae062ea1578eac38c744e3a5
2 files changed +2 -4
blame.c
+1 -2
@@ -314,8 +314,7 @@ static void fill_origin_blob(struct diff_options *opt,
314 static void drop_origin_blob(struct blame_origin *o)
315 {
316 if (o->file.ptr) {
317 - free(o->file.ptr);
318 - o->file.ptr = NULL;
317 + FREE_AND_NULL(o->file.ptr);
318 }
319 }
320
ll-merge.c
+1 -2
@@ -209,8 +209,7 @@ static int ll_ext_merge(const struct ll_merge_driver *fn,
209 result->size = st.st_size;
210 result->ptr = xmallocz(result->size);
211 if (read_in_full(fd, result->ptr, result->size) != result->size) {
212 - free(result->ptr);
213 - result->ptr = NULL;
212 + FREE_AND_NULL(result->ptr);
213 result->size = 0;
214 }
215 close_bad: