Remove some objnum locals with AddIndirectObject

fpdfsdk/fpdfdoc_unittest.cpp

Index: fpdfsdk/fpdfdoc_unittest.cpp
diff --git a/fpdfsdk/fpdfdoc_unittest.cpp b/fpdfsdk/fpdfdoc_unittest.cpp
index 5bda8da9282af3dae5f72589ee06b7784a2429d5..59f9e31e25a7ea1079dad94eeceafc33855b8672 100644
--- a/fpdfsdk/fpdfdoc_unittest.cpp
+++ b/fpdfsdk/fpdfdoc_unittest.cpp
@@ -79,9 +79,8 @@ class PDFDocTest : public testing::Test {
     std::vector<DictObjInfo> info;
     for (int i = 0; i < num; ++i) {
       // Objects created will be released by the document.
-      CPDF_Dictionary* obj(new CPDF_Dictionary());
-      m_pIndirectObjs->AddIndirectObject(obj);
-      info.push_back({obj->GetObjNum(), obj});
+      CPDF_Dictionary* obj = new CPDF_Dictionary;
+      info.push_back({m_pIndirectObjs->AddIndirectObject(obj), obj});
     }
     return info;
   }