fix possible-but-improbable npe
diff --git a/jspwiki-war/src/main/webapp/SisterSites.jsp b/jspwiki-war/src/main/webapp/SisterSites.jsp
index 90481cc..f438dc9 100644
--- a/jspwiki-war/src/main/webapp/SisterSites.jsp
+++ b/jspwiki-war/src/main/webapp/SisterSites.jsp
@@ -51,11 +51,13 @@
if( wiki.getManager( AttachmentManager.class ).getAttachmentInfoName( wikiContext, pageName ) != null ) continue;
Page wikiPage = wiki.getManager( PageManager.class ).getPage( pageName );
- PagePermission permission = PermissionFactory.getPagePermission( wikiPage, "view" );
- boolean allowed = wiki.getManager( AuthorizationManager.class ).checkPermission( wikiContext.getWikiSession(), permission );
- if( allowed ) {
- String url = wikiContext.getViewURL( pageName );
- out.write( url + " " + pageName + "\n" );
+ if( wikiPage != null ) { // there's a possibility the wiki page may get deleted between the call to reference manager and now...
+ PagePermission permission = PermissionFactory.getPagePermission( wikiPage, "view" );
+ boolean allowed = wiki.getManager( AuthorizationManager.class ).checkPermission( wikiContext.getWikiSession(), permission );
+ if( allowed ) {
+ String url = wikiContext.getViewURL( pageName );
+ out.write( url + " " + pageName + "\n" );
+ }
}
}
%>
\ No newline at end of file
