Fixes a memory leak while running the TCK. The connection reference w…

…as not getting cleared if the connection was closed.

git-svn-id: https://olap4j.svn.sourceforge.net/svnroot/olap4j/trunk@531 c6a108a4-781c-0410-a6c6-c2d559e19af0

testsrc/org/olap4j/ConnectionTest.java

@@ -76,8 +76,8 @@ protected void tearDown() throws Exception {
  && !connection.isClosed())
  {
  connection.close();
- connection = null;
  }
+ connection = null;
  testContext = null;
  tester = null;
  }