Apply modernize-use-emplace clang-tidy rule

code/AssetLib/MS3D/MS3DLoader.cpp

@@ -399,7 +399,7 @@ void MS3DImporter::InternReadFile( const std::string& pFile,
         // if one of the groups has no material assigned, but there are other
         // groups with materials, a default material needs to be added (
         // scenepreprocessor adds a default material only if nummat==0).
-        materials.push_back(TempMaterial());
+        materials.emplace_back();
         TempMaterial& m = materials.back();
 
         strcpy(m.name,"<MS3D_DefaultMat>");