Merge pull request #2088 from AetherRadar/fix-optional-redundancy

Fix redundant Optional check in DefaultHashService

Author: lprimak

crypto/hash/src/main/java/org/apache/shiro/crypto/hash/DefaultHashService.java

@@ -19,7 +19,6 @@
 package org.apache.shiro.crypto.hash;
 
 import java.security.SecureRandom;
-import java.util.NoSuchElementException;
 import java.util.Optional;
 import java.util.Random;
 
@@ -90,7 +89,7 @@ public Hash computeHash(HashRequest request) {
 
         Optional<HashSpi> kdfHash = HashProvider.getByAlgorithmName(algorithmName);
         if (kdfHash.isPresent()) {
-            HashSpi hashSpi = kdfHash.orElseThrow(NoSuchElementException::new);
+            HashSpi hashSpi = kdfHash.get();
 
             return hashSpi.newHashFactory(random).generate(request);
         }