License key is missing after update

+++ b/jw_player.install
@@ -46,3 +46,16 @@ function jw_player_update_8001() {
+  $config = \Drupal::configFactory()->getEditable('jw_player.settings');
+  if ($config->get('license_key')) {
+    if (!$config->get('jw_player_key')) {
+      $config->set('jw_player_key', $config->get('license_key'));
+      $config->clear('license_key');
+    }

this can be a single if condition, that should be a bit easier to read.

Maybe also add a comment that the variable was renamed previously and need to make sure that the new one wasn't already set.

Moved the save into the if, we don't need to save if we don't change anything. Committed, thanks.