Fixes a faulty handling of potentially null objects returned by the J…

…VM API.

git-svn-id: https://olap4j.svn.sourceforge.net/svnroot/olap4j/trunk@278 c6a108a4-781c-0410-a6c6-c2d559e19af0

src/org/olap4j/driver/xmla/proxy/XmlaOlap4jHttpProxy.java

@@ -130,10 +130,12 @@ public byte[] getResponse(URL url, String request)
  new ByteArrayOutputStream();
  final byte[] buf = new byte[1024];
  int count;
- while ((count = errorStream.read(buf)) > 0) {
- baos.write(buf, 0, count);
+ if (errorStream != null) {
+ while ((count = errorStream.read(buf)) > 0) {
+ baos.write(buf, 0, count);
+ }
+ errorStream.close();
  }
- errorStream.close();
  baos.close();
  } catch (IOException ex) {
  // Well, we tried. No point notifying the user here.