IIS: Changes event ID (Issue #676)

ModSecurityIIS was reporting events to Windows using ID 0
which seems cause an unexpected verbose message at the
event logger window as reported on #676, changing the ID
to 0x1, although will be nice to have separated events for
misconfiguration, warnings, etc...

iis/mymodule.cpp

@@ -1310,7 +1310,7 @@ BOOL CMyHttpModule::WriteEventViewerLog(LPCSTR szNotification, WORD category)
         // Write any strings to the Event Viewer and return.
         return ReportEvent(
             m_hEventLog,
-            category, 0, 0,
+            category, 0, 0x1,
             NULL, 1, 0, &szNotification, NULL );
     }
     return FALSE;