global: use release_commit_memory()

Instead of calling two separate Git functions to free memory associated
with a commit object, use Git's wrapper which does this.  This also
counts as a potential future bug fix since release_commit_memory() also
resets the parsed state of the commit, meaning any attempt to use it in
the future will correctly fill out the fields again.

release_commit_memory() does not set parents to zero, so keep that for
additional safety in case CGit checks this without calling
parse_commit() again.

Signed-off-by: John Keeping <john@keeping.me.uk>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

3 files changed, 4 insertions, 8 deletions

diff --git a/ui-atom.c b/ui-atom.c
index 541660d..5f4ad7d 100644
--- a/ui-atom.c
+++ b/ui-atom.c
@@ -149,8 +149,7 @@ void cgit_print_atom(char *tip, const char *path, int max_count)
                         first = false;
                 }
                 add_entry(commit, host);
-                free_commit_buffer(the_repository->parsed_objects, commit);
-                free_commit_list(commit->parents);
+                release_commit_memory(the_repository->parsed_objects, commit);
                 commit->parents = NULL;
         }
         html("</feed>\n");
diff --git a/ui-log.c b/ui-log.c
index 29a99a3..2a02689 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -489,8 +489,7 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
         for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; /* nop */) {
                 if (show_commit(commit, &rev))
                         i++;
-                free_commit_buffer(the_repository->parsed_objects, commit);
-                free_commit_list(commit->parents);
+                release_commit_memory(the_repository->parsed_objects, commit);
                 commit->parents = NULL;
         }
 
@@ -511,8 +510,7 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
                         i++;
                         print_commit(commit, &rev);
                 }
-                free_commit_buffer(the_repository->parsed_objects, commit);
-                free_commit_list(commit->parents);
+                release_commit_memory(the_repository->parsed_objects, commit);
                 commit->parents = NULL;
         }
         if (pager) {
diff --git a/ui-stats.c b/ui-stats.c
index 8b7e70c..6d0296d 100644
--- a/ui-stats.c
+++ b/ui-stats.c
@@ -241,8 +241,7 @@ static struct string_list collect_stats(const struct cgit_period *period)
         memset(&authors, 0, sizeof(authors));
         while ((commit = get_revision(&rev)) != NULL) {
                 add_commit(&authors, commit, period);
-                free_commit_buffer(the_repository->parsed_objects, commit);
-                free_commit_list(commit->parents);
+                release_commit_memory(the_repository->parsed_objects, commit);
                 commit->parents = NULL;
         }
         return authors;