[IOT-2113] Change the logic not to delete double time

Change-Id: I56923e53e9b81da45b9ff9e50e7df9cdde233c25
Signed-off-by: ol.beketov <ol.beketov@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/19631Tested-by: jenkins-iotivity <jenkins@iotivity.org>
Reviewed-by: Uze Choi <uzchoi@samsung.com>
Reviewed-by: Randeep Singh <randeep.s@samsung.com>

service/notification/android/notification-service/src/main/jni/consumer/JniNotificationConsumer.cpp

@@ -624,7 +624,6 @@ jobject getJavaMessage(JNIEnv *env, OIC::Service::NSMessage message)
     {
         NS_LOGE ("Failed to create OcRepresentation");
         delete ocRepresentation;
-        return NULL;
     }
     else
     {
@@ -635,7 +634,10 @@ jobject getJavaMessage(JNIEnv *env, OIC::Service::NSMessage message)
     if (!fid_extraInfo)
     {
         NS_LOGE ("Failed to get mExtraInfo for Message");
-        delete ocRepresentation;
+        if (ocRepresentation)
+        {
+            delete ocRepresentation;
+        }
         return NULL;
     }
     NS_LOGD ("setting extraInfo field");