second test should be DataOutputStream

...as <https://gerrit.libreoffice.org/#/c/9007/> "cppcheck: multiCondition,
second test should be DataOutputStream" found out for an effective duplicate of
this code that got removed with the previous commit "Remove dead test code."

Change-Id: Ib7b088f065def2d5e954837d22178521f85c49fe

io/test/stm/datatest.cxx

@@ -118,7 +118,7 @@ void ODataStreamTest::testInvariant(
 
 
     }
-    else if( OUString("com.sun.star.io.DataInputStream") == TestName ) {
+    else if( OUString("com.sun.star.io.DataOutputStream") == TestName ) {
         Reference < XConnectable >  connect( TestObject , UNO_QUERY );
         Reference < XActiveDataSource > active( TestObject , UNO_QUERY );
         Reference < XOutputStream > output( TestObject , UNO_QUERY );