always have a defined return value

apps/files_encryption/lib/crypt.php

@@ -51,18 +51,18 @@ class Crypt {
 	 */
 	public static function createKeypair() {
 
+		$return = false;
+
 		$res = openssl_pkey_new(array('private_key_bits' => 4096));
 
 		if ($res === false) {
 			\OCP\Util::writeLog('Encryption library', 'couldn\'t generate users key-pair for ' . \OCP\User::getUser(), \OCP\Util::ERROR);
-			$result = false;
 		} elseif (openssl_pkey_export($res, $privateKey)) {
-
 			// Get public key
 			$publicKey = openssl_pkey_get_details($res);
 			$publicKey = $publicKey['key'];
 
-			$result = array(
+			$return = array(
 				'publicKey' => $publicKey,
 				'privateKey' => $privateKey
 			);
@@ -70,7 +70,7 @@ class Crypt {
 			\OCP\Util::writeLog('Encryption library', 'couldn\'t export users private key, please check your servers openSSL configuration.' . \OCP\User::getUser(), \OCP\Util::ERROR);
 		}
 
-		return $result;
+		return $return;
 	}
 
 	/**