do a commit to get the db to write.

someone (nsMsgFolder?) still has an open reference to the db when I quit,
so it doesn't automatically get written out

mailnews/news/tests/newsParser/newsParserTest.cpp

@@ -102,7 +102,8 @@ nsresult newsTestDriver::RunDriver()
         
         newMsgHdr->Release();
         newMsgHdr = nsnull;
-
+       
+        m_newsDB->Commit(kSmallCommit);
         m_newsDB->Close(PR_TRUE);
     }