update_redmine_statuses(): Don't update if there are no issues

Previously this would run `update_redmine_status()` even if
`$issue_ids_and_urls` was empty, which would make an unnecessary request
without the required data.

1 files changed, 5 insertions, 3 deletions

diff --git a/redprine b/redprine
index dadba2a..fefa7bf 100755
--- a/redprine
+++ b/redprine
@@ -140,9 +140,11 @@ function issue_numbers_and_pull_request_urls () {
 function update_redmine_statuses () {
 	local issue_ids_and_urls="$1"
 
-	for id_and_url in "$issue_ids_and_urls"; do
-		update_redmine_status "$id_and_url"
-	done
+	if [ ! -z "$issue_ids_and_urls" ]; then
+		for id_and_url in "$issue_ids_and_urls"; do
+			update_redmine_status "$id_and_url"
+		done
+	fi
 }
 
 function update_redmine_status () {