Fix potential NPE when excluding last change author

James Moger

2014-10-13 70250d8ff53081eaccac24517ea96b89d27507b9

 src/main/java/com/gitblit/tickets/TicketNotifier.java

@@ -596,7 +596,7 @@

      // respect the author's email preference
      UserModel lastAuthor = userManager.getUserModel(lastChange.author);
      if (!lastAuthor.getPreferences().isEmailMeOnMyTicketChanges()) {
      if (lastAuthor != null && !lastAuthor.getPreferences().isEmailMeOnMyTicketChanges()) {
         toAddresses.remove(lastAuthor.emailAddress);
         ccAddresses.remove(lastAuthor.emailAddress);
      }