Update apps/files_external/lib/Lib/Storage/SMB.php

Co-authored-by: Côme Chilliet <91878298+come-nc@users.noreply.github.com>
Signed-off-by: Faraz Samapoor <f.samapoor@gmail.com>

apps/files_external/lib/Lib/Storage/SMB.php

@@ -141,9 +141,7 @@ class SMB extends Common implements INotifyStorage {
 	private function splitUser($user) {
 		if (str_contains($user, '/')) {
 			return explode('/', $user, 2);
-		}
-
-		if (str_contains($user, '\\')) {
+		} elseif (str_contains($user, '\\')) {
 			return explode('\\', $user);
 		}