tdf#92934: Web Wizard: Cannot Export Zip archive

pubAware_ adds 2 elements for each of these:
LOCAL_PUBLISHER, ZIP_PUBLISHER, FTP_PUBLISHER
and since ZIP_PUBLISHER is added in second positon,
the right index is 2 not 4

Change-Id: I0a533fd0cefcbbfca0e95628f64fac6258019600
Reviewed-on: https://gerrit.libreoffice.org/18715Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
Tested-by: Julien Nabet <serval2412@yahoo.fr>
(cherry picked from commit e72a4a3c)
Reviewed-on: https://gerrit.libreoffice.org/18717Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

wizards/com/sun/star/wizards/web/WWD_Events.py

@@ -459,7 +459,7 @@ class WWD_Events(WWD_Startup):
         zipFile = sd.callStoreDialog(
             self.settings.cp_DefaultSession.cp_OutDirectory,
             self.resources.resDefaultArchiveFilename)
-        self.setPublishUrl(ZIP_PUBLISHER, zipFile, 4)
+        self.setPublishUrl(ZIP_PUBLISHER, zipFile, 2)
         self.getPublisher(ZIP_PUBLISHER).overwriteApproved = True
 
     '''