Re: [PATCH v6 15/16] Ensure that the output buffer is released after calling merge_trees()

The recursive merge machinery accumulates its output in an output
buffer, to be flushed at the end of merge_recursive(). At this point,
we forgot to release the output buffer.
...

diff --git a/merge-recursive.c b/merge-recursive.c
index ec50932..9e527de 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c

@@ -2078,6 +2078,8 @@ int merge_recursive(struct merge_options *o,
 		commit_list_insert(h2, &(*result)->parents->next);
 	}
 	flush_output(o);
+	if (!o->call_depth && o->buffer_output < 2)
+		strbuf_release(&o->obuf);