Minor simplification in packet decoding

No need to divide two equal values; just increment the block count.

sshd-core/src/main/java/org/apache/sshd/common/session/helpers/AbstractSession.java

@@ -1589,9 +1589,7 @@ protected void decode() throws Exception {
                     } else if ((inCipher != null) && (!etmMode)) {
                         // Decrypt the first bytes so we can extract the packet length
                         inCipher.update(decoderBuffer.array(), 0, inCipherSize);
-
-                        int blocksCount = inCipherSize / inCipher.getCipherBlockSize();
-                        inBlocksCount.addAndGet(Math.max(1, blocksCount));
+                        inBlocksCount.incrementAndGet();
                     }
                     // Read packet length
                     decoderLength = decoderBuffer.getInt();