Merge tag 'v0.18.18' into v0.19.x

src/client/Client.hxx

@@ -127,7 +127,7 @@ public:
 	 * a local (UNIX domain) socket?
 	 */
 	bool IsLocal() const {
-		return uid > 0;
+		return uid >= 0;
 	}
 
 	unsigned GetPermission() const {

src/client/ClientFile.cxx

@@ -41,7 +41,7 @@ Client::AllowFile(Path path_fs, Error &error) const
 		   instance */
 		return true;
 
-	if (uid <= 0) {
+	if (uid < 0) {
 		/* unauthenticated client */
 		error.Set(ack_domain, ACK_ERROR_PERMISSION, "Access denied");
 		return false;