Fix for build, which was failing on MvcEvent being null in one of the tests.

spring-data-mongodb/src/main/java/org/springframework/data/document/mongodb/MongoTemplate.java

@@ -1205,7 +1205,13 @@ public class MongoTemplate implements InitializingBean, MongoOperations, Applica
     public T doWith(DBObject object) {
       maybeEmitEvent(new AfterLoadEvent<DBObject>(object));
       T source = reader.read(type, object);
-      maybeEmitEvent(new AfterConvertEvent<T>(object, source));
+      if (null != source) {
+        maybeEmitEvent(new AfterConvertEvent<T>(object, source));
+      } else {
+        if (LOGGER.isDebugEnabled()) {
+          LOGGER.debug("Source object was <NULL>, so couldn't fire AfterConvertEvent<" + type.getName() + ">");
+        }
+      }
       return source;
     }
   }