Remove is_object

is_object doesn't throw, but generally is_object is used in some kind of
pattern of.

if (x.is_object()){
   x["thing"];
}

operator[] technically throws if it's the wrong type, which bloats
binary sizes.

Replace these with the equivalent get_ptr<object_t>

Change-Id: If3734d7920f0a6f81efa10b3a2d91595e9e0af5a
Signed-off-by: Ed Tanous <etanous@nvidia.com>
diff --git a/redfish-core/include/sub_request.hpp b/redfish-core/include/sub_request.hpp
index df8cf70..c44644a 100644
--- a/redfish-core/include/sub_request.hpp
+++ b/redfish-core/include/sub_request.hpp
@@ -31,7 +31,7 @@
             }
 
             auto oemIt = reqJson.find("Oem");
-            if (oemIt != reqJson.end() && oemIt->is_object())
+            if (oemIt != reqJson.end())
             {
                 const nlohmann::json::object_t* oemObj =
                     oemIt->get_ptr<const nlohmann::json::object_t*>();
diff --git a/redfish-core/include/utils/query_param.hpp b/redfish-core/include/utils/query_param.hpp
index ca2822d..57b5d06 100644
--- a/redfish-core/include/utils/query_param.hpp
+++ b/redfish-core/include/utils/query_param.hpp
@@ -771,12 +771,14 @@
     {
         BMCWEB_LOG_DEBUG("placeResult for {}", locationToPlace);
         propogateError(finalRes->res, res);
-        if (!res.jsonValue.is_object() || res.jsonValue.empty())
+        nlohmann::json::object_t* obj =
+            res.jsonValue.get_ptr<nlohmann::json::object_t*>();
+        if (obj == nullptr || res.jsonValue.empty())
         {
             return;
         }
         nlohmann::json& finalObj = finalRes->res.jsonValue[locationToPlace];
-        finalObj = std::move(res.jsonValue);
+        finalObj = std::move(*obj);
     }
 
     // Handles the very first level of Expand, and starts a chain of sub-queries