if one public link share was found, we don't have to check it for the other folders

lib/public/share.php

@@ -185,6 +185,7 @@ class Share {
 			}
 
 			//check for public link shares
+			if (!$publicShare) {
 				$query = \OC_DB::prepare(
 						'SELECT share_with
 				FROM
@@ -202,6 +203,7 @@ class Share {
 				if ($result->fetchRow()) {
 					$publicShare = true;
 				}
+			}
 			
 			// let's get the parent for the next round
 			$meta = $cache->get((int)$source);