[GSoC][PATCH] merge: use reverse_commit_list() for list reversal

[Kousik Sanagavarapu <five231003@gmail.com>]

Instead of manually doing an in-place list reversal, use the helper
function reverse_commit_list(), hence improving code readability.

Signed-off-by: Kousik Sanagavarapu <five231003@gmail.com>
---

This patch addresses the issue #1156(Use reverse_commit_list() in more
places) on gitgitgadget. I also would like to submit this patch as the microproject for
GSoC 2023.

 builtin/merge.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/builtin/merge.c b/builtin/merge.c
index 5900b81729..4503dbfeb3 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -736,7 +736,6 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
 		struct commit *result;
 		struct commit_list *reversed = NULL;
 		struct merge_options o;
-		struct commit_list *j;
 
 		if (remoteheads->next) {
 			error(_("Not handling anything other than two heads merge."));
@@ -757,8 +756,7 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
 		o.branch1 = head_arg;
 		o.branch2 = merge_remote_util(remoteheads->item)->name;
 
-		for (j = common; j; j = j->next)
-			commit_list_insert(j->item, &reversed);
+		reversed = reverse_commit_list(common);
 
 		hold_locked_index(&lock, LOCK_DIE_ON_ERROR);
 		if (!strcmp(strategy, "ort"))
-- 
2.25.1