merge-ort: support having merge verbosity be set to 0

Various callers such as am & checkout set the merge verbosity to 0 to
avoid having conflict messages printed.  While this could be achieved by
avoiding the wrappers from merge-ort-wrappers and instead passing 0 for
display_update_msgs to merge_switch_to_result(), for simplicity of
converting callers simply allow them to also achieve this with the
merge-ort-wrappers by setting verbosity to 0.

Signed-off-by: Elijah Newren <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: newren

merge-ort.c

@@ -799,6 +799,8 @@ static void path_msg(struct merge_options *opt,
 		return; /* Do not record mere hints in headers */
 	if (opt->priv->call_depth && opt->verbosity < 5)
 		return; /* Ignore messages from inner merges */
+	if (!opt->verbosity)
+		return;
 
 	/* Ensure path_conflicts (ptr to array of logical_conflict) allocated */
 	path_conflicts = strmap_get(&opt->priv->conflicts, primary_path);