fix: undefined variable when fetching preview

Signed-off-by: Elizabeth Danzberger <lizzy7128@tutanota.de>

Author: elzody

lib/Listener/BeforeFetchPreviewListener.php

@@ -38,12 +38,13 @@ public function handle(Event $event): void {
 		}
 		$shareToken = $this->request->getParam('token');
 
+		$share = null;
 		try {
-			$share = $shareToken ?
-				// Get different share for public previews as the share from the node is only set for mounted shares
-				$this->shareManager->getShareByToken($shareToken)
-				// Get share for internal shares
-				: $this->helper->getShareFromNode($event->getNode());
+			// Get different share for public previews as the share from the node is only set for mounted shares
+			$share = $shareToken ? $this->shareManager->getShareByToken($shareToken) : null;
+
+			// Get share for internal shares
+			$share = $this->helper->getShareFromNode($event->getNode());
 		} catch (ShareNotFound) {
 		}