Does KeystoreEncryptionSpi have problem with size calculation?

[Максим Степачёв]

Hi, I have been trying to solve a problem with calculation size for
encryption mode, it's ticket IGNITE-11129. But I found an additional place
for wrong behavior. I'm confused, Is it fine or wrong? Look at
*KeystoreEncryptionSpi#encryptedSize*, the result calculation works as

(dataSize / BLOCK_SZ + cntBlocks) * BLOCK_SZ;

But we don't have a guarantee that dataSize is multiple of BLOCK_SZ.
Should we use this code:

((dataSize + BLOCK_SZ - 1) / BLOCK_SZ + cntBlocks) * BLOCK_SZ;

If yes, I'll fix it.