Instead of using initCause() when re-throwing exceptions, it leads to…

… better stacktraces if a simple constructor-argument is used

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1568614 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/poi/poifs/crypt/EncryptionInfo.java

@@ -66,7 +66,7 @@ public EncryptionInfo(DirectoryNode dir) throws IOException {
         try {
             eib = getBuilder(encryptionMode);
         } catch (Exception e) {
-            throw (IOException)new IOException().initCause(e);
+            throw new IOException(e);
         }
 
         eib.initialize(this, dis);