-1 is now a class constant (UNSHARED), for unsharing files from self

apps/files_sharing/lib_share.php

@@ -30,6 +30,7 @@ class OC_Share {
 
 	const WRITE = 1;
 	const DELETE = 2;
+	const UNSHARED = -1;
 	const PUBLICLINK = "public";
 
 	private $token;
@@ -369,7 +370,7 @@ class OC_Share {
 			$query->execute(array(strlen($target), $target));
 		} else {
 			$query = OC_DB::prepare("UPDATE *PREFIX*sharing SET permissions = ? WHERE SUBSTR(target, 1, ?) = ? AND uid_shared_with ".self::getUsersAndGroups());
-			$query->execute(array(-1, strlen($target), $target));
+			$query->execute(array(self::UNSHARED, strlen($target), $target));
 		}
 	}
 

apps/files_sharing/sharedstorage.php

@@ -113,7 +113,7 @@ class OC_Filestorage_Shared extends OC_Filestorage {
 						// If the item is in the current directory and has a different name than the source, add it to the arrays
 						if (dirname($item['target']) == $path) {
 							// If the item was unshared from self, add it it to the arrays
-							if ($item['permissions'] == -1) {
+							if ($item['permissions'] == OC_Share::UNSHARED) {
 								$sources[] = basename($item['source']);
 								$targets[] = "";
 							} else {