Merge "Issue #1526 improved exception handling per code review comments" into development

Former-commit-id: bb9789c558f6abf2f75a146edc7a197784e3711b

edexOsgi/com.raytheon.uf.common.comm/src/com/raytheon/uf/common/comm/stream/DynamicSerializeStreamEntity.java

@@ -108,8 +108,8 @@ public class DynamicSerializeStreamEntity extends AbstractHttpEntity {
             DynamicSerializationManager.getManager(SerializationType.Thrift)
                     .serialize(obj, os);
         } catch (SerializationException e) {
-            throw new IOException("Error serializing " + obj.getClass()
-                    + " to stream", e);
+            throw new IOException("Error serializing "
+                    + (obj != null ? obj.getClass() : null) + " to stream", e);
         }
     }