fix missing flush before returning ciphertext

Author: overheadhunter

src/test/java/org/cryptomator/cryptolib/v3/UVFIntegrationTest.java

@@ -16,7 +16,6 @@
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
-import java.io.UncheckedIOException;
 import java.nio.ByteBuffer;
 import java.nio.channels.Channels;
 import java.nio.charset.StandardCharsets;
@@ -151,11 +150,11 @@ public void testCreateReferenceDirStructure(@TempDir Path vaultDir) throws IOExc
 	}
 
 	private static byte[] encryptFile(ByteBuffer cleartext, Cryptor cryptor) throws IOException {
-		try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
-			 EncryptingWritableByteChannel ch = new EncryptingWritableByteChannel(Channels.newChannel(baos), cryptor)) {
+		ByteArrayOutputStream baos = new ByteArrayOutputStream();
+		try (EncryptingWritableByteChannel ch = new EncryptingWritableByteChannel(Channels.newChannel(baos), cryptor)) {
 			ch.write(cleartext);
-			return baos.toByteArray();
 		}
+		return baos.toByteArray();
 	}
 
 	private static byte[] decryptFile(ByteBuffer ciphertext, Cryptor cryptor) throws IOException {