[PATCH v2 1/2] merge-ort: clean up after failed merge

["Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com>]

From: Johannes Schindelin <johannes.schindelin@gmx.de>

In 9fefce68dc8 (merge-ort: basic outline for merge_switch_to_result(),
2020-12-13), we added functionality to lay down the result of a merge on
disk. But we forgot to release the data structures in case
`unpack_trees()` failed to run properly.

This was pointed out by the `linux-leaks` job in our CI runs.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
 merge-ort.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/merge-ort.c b/merge-ort.c
index 931b91438cf..e820e45a8e8 100644
--- a/merge-ort.c
+++ b/merge-ort.c
@@ -3157,6 +3157,7 @@ void merge_switch_to_result(struct merge_options *opt,
 		if (checkout(opt, head, result->tree)) {
 			/* failure to function */
 			result->clean = -1;
+			merge_finalize(opt, result);
 			return;
 		}
 		trace2_region_leave("merge", "checkout", opt->repo);
@@ -3167,6 +3168,7 @@ void merge_switch_to_result(struct merge_options *opt,
 						    &opti->conflicted)) {
 			/* failure to function */
 			result->clean = -1;
+			merge_finalize(opt, result);
 			return;
 		}
 		trace2_region_leave("merge", "record_conflicted", opt->repo);
-- 
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