Merge branch 'ab/free-and-null'

A common pattern to free a piece of memory and assign NULL to the
pointer that used to point at it has been replaced with a new
FREE_AND_NULL() macro.

* ab/free-and-null:
  *.[ch] refactoring: make use of the FREE_AND_NULL() macro
  coccinelle: make use of the "expression" FREE_AND_NULL() rule
  coccinelle: add a rule to make "expression" code use FREE_AND_NULL()
  coccinelle: make use of the "type" FREE_AND_NULL() rule
  coccinelle: add a rule to make "type" code use FREE_AND_NULL()
  git-compat-util: add a FREE_AND_NULL() wrapper around free(ptr); ptr = NULL

1 files changed, 2 insertions, 4 deletions

diff --git a/line-log.c b/line-log.c
index 2588ce0767..ab0709f9ae 100644
--- a/line-log.c
+++ b/line-log.c
@@ -34,9 +34,8 @@ void range_set_init(struct range_set *rs, size_t prealloc)
 
 void range_set_release(struct range_set *rs)
 {
-	free(rs->ranges);
+	FREE_AND_NULL(rs->ranges);
 	rs->alloc = rs->nr = 0;
-	rs->ranges = NULL;
 }
 
 /* dst must be uninitialized! */
@@ -610,8 +609,7 @@ parse_lines(struct commit *commit, const char *prefix, struct string_list *args)
 		line_log_data_insert(&ranges, full_name, begin, end);
 
 		free_filespec(spec);
-		free(ends);
-		ends = NULL;
+		FREE_AND_NULL(ends);
 	}
 
 	for (p = ranges; p; p = p->next)