Catch some potential NPEs

James Moger

2015-11-18 def01db5f7dc1c607026528eed1dfd75c6e59779

 src/test/java/com/gitblit/tests/mock/MemorySettings.java

@@ -48,6 +48,11 @@
   }

   @Override
   public boolean saveSettings() {
      return false;
   }

   @Override
   public boolean saveSettings(Map<String, String> updatedSettings) {
      return false;
   }