[PATCH 1/6] revert: Don't remove the sequencer state on error

The cherry-pick/ revert machinery now removes the sequencer state when
do_pick_commit returns a non-zero, and when only one instruction is
left in the todo_list.  Since do_pick_commit has a way to distinguish
errors from conflicts using the signed-ness of the return value,
utilize this to ensure that the sequencer state is only removed when
there's a conflict and there is only one instruction left in the
todo_list.

Signed-off-by: Ramkumar Ramachandra <redacted>
---
 builtin/revert.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/builtin/revert.c b/builtin/revert.c
index 8b452e8..a548a14 100644
--- a/builtin/revert.c
+++ b/builtin/revert.c

@@ -929,10 +929,10 @@ static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts)
 		save_todo(cur, opts);
 		res = do_pick_commit(cur->item, opts);
 		if (res) {
-			if (!cur->next)
+			if (!cur->next && res > 0)
 				/*
-				 * An error was encountered while
-				 * picking the last commit; the
+				 * A conflict was encountered while
+				 * picking the last commit.  The
 				 * sequencer state is useless now --
 				 * the user simply needs to resolve
 				 * the conflict and commit

-- 
1.7.6.351.gb35ac.dirty